Properties of the Number 23008

Twenty-Three Thousand Eight

Basics

Value: 23007 → 23008 → 23009

Parity: even

Prime: No

Previous Prime: 23003

Next Prime: 23011

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 719

Divisors: 1, 2, 4, 8, 16, 32, 719, 1438, 2876, 5752

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101100111100000

Octal: 54740

Duodecimal: 11394

Hexadecimal: 59e0

Square: 529368064

Square Root: 151.68388180686833

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) is the number of 4 element sets of distinct integer sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units. A389392

Triangle read by rows: T(n,k) is the number of unlabeled nonseparable (or 2-connected) loopless multigraphs with n edges on k nodes and degree >= 3 at each node, n >= 3, 2 <= k <= floor(2·n/3). A46752

The 5th Hermite Polynomial evaluated at n: H₅(n) = 32·n⁵ - 160·n³ + 120·n. A247850

Integers which can be written in exactly three ways as sum of two distinct nonzero pentagonal numbers. A333013

Numbers k such that A048673(k) divides 1+A003973(k). A337342

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min(i(i+1)/2, j(j+1)/2) (A106255). A204024

Irregular triangle read by rows: T(n,k) is the number of polyominoes of size k, i.e., connected subsets of k square cells (or vertices), of the n X n flat torus, up to cyclic shifts and reflections of rows and columns; 1 <= k <= n². A385383

Sum of squares of entries of Wilkinson's eigenvalue test matrix of order 2n+1. A59834

a(n) = Hermite(n,4). A144143

Triangular array read by rows. T(n, k) is the coefficient of x^k in a(n+3) where a(1) = a(2) = a(3) = 1 and a(m+2) = (m·x + 2)*a(m+1) - a(m) for all m in Z. A358735