Properties of the Number 22815

Twenty-Two Thousand Eight Hundred Fifteen

Basics

Value: 22814 → 22815 → 22816

Parity: odd

Prime: No

Previous Prime: 22811

Next Prime: 22817

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 13 ²

Divisors: 1, 3, 5, 9, 13, 15, 27, 39, 45, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100100011111

Octal: 54437

Duodecimal: 11253

Hexadecimal: 591f

Square: 520524225

Square Root: 151.04635050208927

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

Centered cube numbers: n³ + (n+1)³. A5898

Number of inequivalent ways to color edges of a cube using at most n colors. A60530

a(n) = 15·n². A64761

Array read by descending antidiagonals: T(n,k) is the number of oriented colorings of the edges of a regular n-dimensional orthotope (hypercube) using k or fewer colors. A337407

a(n) is the cototient of n³. A53192

Row sums of the triangular array A246694. A246695

a(0) = 1; a(n) = (1 + a(0)³ + ... + a(n-1)³)/n (not always integral!). A5166

Number of directed 2-multigraphs on n nodes. A53467

Odd n such that 2*φ(n) < n, but there does not exist an even k < n with φ(k) = φ(n). A118700

Numbers k such that k and k+1 are both φ-practical numbers (A260653). A330871