20899 (number)
20,899 (twenty thousand eight hundred ninetynine) is an odd fivedigits prime number following 20898 and preceding 20900. In scientific notation, it is written as 2.0899 × 10^{4}. The sum of its digits is 28. It has a total of 1 prime factor and 2 positive divisors. There are 20,898 positive integers (up to 20899) that are relatively prime to 20899.
Basic properties
 Is Prime? Yes
 Number parity Odd
 Number length 5
 Sum of Digits 28
 Digital Root 1
Name
Short name  20 thousand 899 

Full name  twenty thousand eight hundred ninetynine 
Notation
Scientific notation  2.0899 × 10^{4} 

Engineering notation  20.899 × 10^{3} 
Prime Factorization of 20899
Prime Factorization 20899
Prime numberω(n)  Distinct Factors  1  Total number of distinct prime factors 

Ω(n)  Total Factors  1  Total number of prime factors 
rad(n)  Radical  20899  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  9.9474565899183  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 20,899 is 20899. Since it has a total of 1 prime factor, 20,899 is a prime number.
Divisors of 20899
2 divisors
τ(n)  Total Divisors  2  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  20900  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  1  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  10450  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  144.56486433432  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  1.9999043062201  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 20,899 can be divided by 2 positive divisors (out of which 0 are even, and 2 are odd). The sum of these divisors (counting 20,899) is 20,900, the average is 10,450.
Other Arithmetic Functions (n = 20899)
φ(n)  Euler Totient  20898  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  20898  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 2356  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 20,898 positive integers (less than 20,899) that are coprime with 20,899. And there are approximately 2,356 prime numbers less than or equal to 20,899.
Divisibility of 20899
m  2  3  4  5  6  7  8  9 

n mod m  1  1  3  4  1  4  3  1 
20,899 is not divisible by any number less than or equal to 9.
Classification of 20899
By Arithmetic functions
 Arithmetic
 Prime
 Deficient
Expressible via specific sums
 Polite
 Nonhypotenuse
By Powers
 Prime Power
 Square Free
Base conversion (20899)
Base  System  Value 

2  Binary  101000110100011 
3  Ternary  1001200001 
4  Quaternary  11012203 
5  Quinary  1132044 
6  Senary  240431 
8  Octal  50643 
10  Decimal  20899 
12  Duodecimal  10117 
16  Hexadecimal  51a3 
20  Vigesimal  2c4j 
36  Base36  g4j 
Basic calculations (n = 20899)
Multiplication
n×yn×2  41798 

n×3  62697 
n×4  83596 
n×5  104495 
Division
n÷yn÷2  10449.500 

n÷3  6966.333 
n÷4  5224.750 
n÷5  4179.800 
Exponentiation
n^{y}n^{2}  436768201 

n^{3}  9128018632699 
n^{4}  190766461404776401 
n^{5}  3986828276898422004499 
Nth Root
^{y}√n^{2}√n  144.56486433432 

^{3}√n  27.54494029301 
^{4}√n  12.023512978091 
^{5}√n  7.3118134281584 
20899 as geometric shapes
Circle
Radius = nDiameter  41798 

Circumference  131312.28973475 
Area  1372147771.5832 
Sphere
Radius = nVolume  38235355037757 

Surface area  5488591086.3329 
Circumference  131312.28973475 
Square
Length = nPerimeter  83596 

Area  436768201 
Diagonal  29555.649240035 
Cube
Length = nSurface area  2620609206 

Volume  9128018632699 
Space diagonal  36198.129827382 
Equilateral Triangle
Length = nPerimeter  62697 

Area  189126178.81561 
Altitude  18099.064913691 
Triangular Pyramid
Length = nSurface area  756504715.26246 

Volume  1075747312329.8 
Height  17063.962044809 
Cryptographic Hash Functions
md5  259aa33b32fc31717e8a18f2dc9edc19 

sha1  b7f78c44c0a49623f81133b73b7e29232ccdad5e 
sha256  95bb4b331a389c02f2e786b1b7452e5b18f24f3d3de2aaab606672775c2bfcbc 
sha512  be9b56d80bfb581e1c6a2b151bb447201576693cc11be6167dba6c277b3a78921f657bcf7b939d85cb4ad91f4b334495510adae9d05a75e30631a87581c88e06 
ripemd160  a9a18a4956fd6bfd57b95ec1fec5090d72d1f788 