Properties of the Number 20976

Twenty Thousand Nine Hundred Seventy-Six

Basics

Value: 20975 → 20976 → 20977

Parity: even

Prime: No

Previous Prime: 20963

Next Prime: 20981

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ⁴ × 3 × 19 × 23

Divisors: 1, 2, 3, 4, 6, 8, 12, 16, 19, 23

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000111110000

Octal: 50760

Duodecimal: 10180

Hexadecimal: 51f0

Square: 439992576

Square Root: 144.83093592185338

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

Numbers k in pairs (j,k), with j <> k +- 1, such that the sum of their cubes is equal to a centered cube number. A352136

Output of the linear congruential pseudo-random number generator rand() used in Microsoft's Visual C++. A96558

Graham-Pollak sequence with initial term 5. A91522

T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element plus any horizontal, vertical, diagonal or antidiagonal neighbor equal to n-1. A266208

Numbers k at which A343740(k) reaches a record high. A343742

Difference between n-th prime squared and n-th perfect square. A106588

a(1)=1, a(n) = a(n-1) + n⁵ if n odd, a(n) = a(n-1) + n³ if n is even. A135099

Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..3 array extended with zeros and convolved with 1,1. A222329

McKay-Thompson series of class 22a for Monster. A58569

Numbers k such that sopf(k) = sopf(k+3), where sopf(k) = A008472(k). A63969