Properties of the Number 20944

Twenty Thousand Nine Hundred Forty-Four

Basics

Value: 20943 → 20944 → 20945

Parity: even

Prime: No

Previous Prime: 20939

Next Prime: 20947

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 7 × 11 × 17

Divisors: 1, 2, 4, 7, 8, 11, 14, 16, 17, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000111010000

Octal: 50720

Duodecimal: 10154

Hexadecimal: 51d0

Square: 438651136

Square Root: 144.72042012100434

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of integer partitions of n with as many even parts as even conjugate parts. A350948

Number of right isosceles triangles that can be formed from the n² points of n X n grid of points (or geoboard). A187452

a(n) = n*(n+1)*(n+2)*(n+3)*(3·n+2)/120. A51836

T(n,k)=Number of 0..k arrays of length n with each element differing from at least one neighbor by something other than 1. A221573

Expansion of 1/(1 - x⁶/(1-x)⁷). A369809

a(n) = (3·n+5)!!!/5!!!. A51605

Number of ways to place 3 nonattacking kings on a 3 X n board. A172202

Denominators a(n) of Pythagorean approximations b(n)/a(n) to 3/5. A195577

Numbers n such that the decimal number concat(6,n) is a square. A273361

Number of nonaveraging subsets on {1,2,...,n}. A51013