Properties of the Number 81288

Eighty-One Thousand Two Hundred Eighty-Eight

Basics

Value: 81287 → 81288 → 81289

Parity: even

Prime: No

Previous Prime: 81283

Next Prime: 81293

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 1129

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110110001000

Octal: 236610

Duodecimal: 3B060

Hexadecimal: 13d88

Square: 6607738944

Square Root: 285.1105048924013

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

Expansion of ∏_k>=1 (1 - x^k * (1 + k·x)). A336978

Number of nX4 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302208

Diagonal sums of A103209, viewed as number triangle. A107704

a(n) is the minimal i such that A000108(i) > n. A81288