Properties of the Number 22015

Twenty-Two Thousand Fifteen

Basics

Value: 22014 → 22015 → 22016

Parity: odd

Prime: No

Previous Prime: 22013

Next Prime: 22027

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 7 × 17 × 37

Divisors: 1, 5, 7, 17, 35, 37, 85, 119, 185, 259

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101010111111111

Octal: 52777

Duodecimal: 108A7

Hexadecimal: 55ff

Square: 484660225

Square Root: 148.37452611550273

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)*(n + 2)/2. A77414

A sequence of asymptotic density ζ(10) - 1, where ζ is the Riemann ζ function. A143036

Numbers that reach the fixed point 89 under iteration of f(x) = reverse(x) - maxdigit(x). A97155

G.f.: 1/(1 + x + 2·x² + 2·x³ + x⁴). A199744

G.f.: 1/(1-2·x+2·x²-x³+x⁴). A199802

Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 601", based on the 5-celled von Neumann neighborhood. A289775

Number of ways of covering a 2n X 2n lattice by 2n² dominoes with exactly 4 horizontal (or vertical) dominoes. A38758

Odd numbers k such that A064989(k) is in A340151. A340091

a(n) = 2ⁿ - 1 + Fibonacci(n-1)*2ⁿ⁺¹. A60160

Expansion of (1-2·x+2·x²-x³)/(1-3·x+5·x²-3·x³+x⁴). A123879