Properties of the Number -23156

Twenty-Three Thousand One Hundred Fifty-Six

Basics

Value: -23157 → -23156 → -23155

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 827

Divisors: 1, 2, 4, 7, 14, 28, 827, 1654, 3308, 5789

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101001110100

Octal: -55164

Duodecimal: -11498

Hexadecimal: -5a74

Square: 536200336

Square Root: 152.17095649301808

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

Chapman's "evil" determinants I. A179071

a(n) = coefficient of xⁿ in A(x) such that C(x)² + S(x)² = 1 where: C(x) + i·S(x) = ∑_n=-oo..+oo iⁿ * (2·x)^n² * A(x)ⁿ. A357787

A179071 for p == 1 (mod 4). A179073

Numbers n such that σ(n) is a Fibonacci number. A272412

Numbers n such that sopf(n) = sopf(n-1) + sopf(n-2) + sopf(n-3), where sopf(x) = sum of the distinct prime factors of x. A75784

Let p(n) be the n-th prime congruent to 1 mod 4. Then a(n) = the least m for which m²+1=p(n)*k² has a solution. A94048

Numbers that are the sum of seven fourth powers in seven or more ways. A345573

Numbers that are the sum of seven fourth powers in exactly seven ways. A345829

T(n,k)=Number of nXk binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once. A268766

Smallest integer·satisfying the Pell equation x²-k·y²=-1 for the values of k given in A031396. A130226