Properties of the Number 20832

Twenty Thousand Eight Hundred Thirty-Two

Basics

Value: 20831 → 20832 → 20833

Parity: even

Prime: No

Previous Prime: 20809

Next Prime: 20849

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁵ × 3 × 7 × 31

Divisors: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000101100000

Octal: 50540

Duodecimal: 10080

Hexadecimal: 5160

Square: 433972224

Square Root: 144.33294842134973

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

a(n) = n*(n+1)*(2·n+1)/3. A6331

Number of permutation groups of degree n; also number of conjugacy classes of subgroups of symmetric group S_n; also number of molecular species of degree n. A638

The number of regions inside a hexagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts. A331931

Numbers n such that 54 'Reverse and Add' steps are needed to reach a palindrome. A65321

Sum of the squarefree parts of the partitions of n into 8 parts. A309484

G.f. A(x) satisfies A(x) = 1 + x * ((1 - x) / A(x))². A366434

Numbers k such that σ(k) divides k². A90777

Numbers of the form p⁵*q·r*s where p, q, r, and s are distinct primes. A179704

Numbers k such that A380845(k) = 3·k. A380847

Let b(0)=1; b(1)=1; b(n+2)=(e^g+1/e^g)*b(n+1)-b(n). a(n)=floor(b(n)). A93608