Properties of the Number 81688

Eighty-One Thousand Six Hundred Eighty-Eight

Basics

Value: 81687 → 81688 → 81689

Parity: even

Prime: No

Previous Prime: 81677

Next Prime: 81689

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 10211

Divisors: 1, 2, 4, 8, 10211, 20422, 40844, 81688

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100011000

Octal: 237430

Duodecimal: 3B334

Hexadecimal: 13f18

Square: 6672929344

Square Root: 285.81112644542026

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

Number of partitions of 4n-1 into n nonnegative integers each no greater than 8. A1982

0 followed by A030124 - 1. A81688