Properties of the Number -13160

Thirteen Thousand One Hundred Sixty

Basics

Value: -13161 → -13160 → -13159

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 7 × 47

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001101101000

Octal: -31550

Duodecimal: -7748

Hexadecimal: -3368

Square: 173185600

Square Root: 114.71704319759989

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) = ∑_k=1..n floor(n/k) * (-4)^k-1. A344819

Matrix inverse of triangle A055140. A55141

a(n) = (n+1)*(n+3)*(n+8)/6. A297

a(0) = 0; for n>0, a(n) = maximal number of regions into which space can be divided by n spheres. A46127

Number of pentagonal regions in regular n-gon with all diagonals drawn. A67152

Number of nonsquare rectangles on an n X n board. A52149

Triangle T(n,k) of n X n binary matrices with k ones, with no zero rows or columns, up to row and column permutation. A57149

Triangle T(n,k), n>=1, read by rows, where T(n,k) is the number of lattice polygons with area n and perimeter 2·k. A8855

Numbers k such that 2k-1 divides 2^k-1. A81856

Irregular triangle read by rows: T(n, k) is the number of 2n-step closed walks on the square lattice having algebraic area k; n >= 0, 0 <= k <= floor(n²/4). A352838