Properties of the Number 15624

Fifteen Thousand Six Hundred Twenty-Four

Basics

Value: 15623 → 15624 → 15625

Parity: even

Prime: No

Previous Prime: 15619

Next Prime: 15629

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 7 × 31

Divisors: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11110100001000

Octal: 36410

Duodecimal: 9060

Hexadecimal: 3d08

Square: 244109376

Square Root: 124.99599993599796

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) = n³ - 1. A68601

a(n) = 5ⁿ - 1. A24049

Array of values of Jordan function J_k(n) read by antidiagonals (version 1). A59379

Table T(n,k) by antidiagonals. T(n,k) is the number of length n primitive (=aperiodic or period n) k-ary words (n,k >= 1) which are earlier in lexicographic order than any other word derived by cyclic shifts of the alphabet. A143325

Array of values of Jordan function J_k(n) read by antidiagonals (version 2). A59380

3 times octagonal numbers: a(n) = 3·n*(3·n-2). A152751

Jordan function J₆(n). A69091

Numbers k such that k and k + 1 are both Niven numbers in base 3/2 (A342426). A342427

Starts of runs of 3 consecutive Niven numbers in base 3/2 (A342426). A342428

Numbers that are repdigits with length > 2 in more than one base. A167783