Properties of the Number 87230

Eighty-Seven Thousand Two Hundred Thirty

Basics

Value: 87229 → 87230 → 87231

Parity: even

Prime: No

Previous Prime: 87223

Next Prime: 87251

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 11 × 13 × 61

Divisors: 1, 2, 5, 10, 11, 13, 22, 26, 55, 61

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101010010111110

Octal: 252276

Duodecimal: 42592

Hexadecimal: 154be

Square: 7609072900

Square Root: 295.347253246073

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

Central elements in the 5-Pascal triangle A028313. A28322

Distinct even elements in the 5-Pascal triangle A028313. A28320

Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7. A252190

Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7. A252191

a(n) is the 2-adic valuation of 6·n + 4. A87230

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 1 3 6 or 7. A252192

Number of ways to place 6 nonattacking kings on an n X n toroidal board. A179426