Properties of the Number 72681

Seventy-Two Thousand Six Hundred Eighty-One

Basics

Value: 72680 → 72681 → 72682

Parity: odd

Prime: No

Previous Prime: 72679

Next Prime: 72689

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 3461

Divisors: 1, 3, 7, 21, 3461, 10383, 24227, 72681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101111101001

Octal: 215751

Duodecimal: 36089

Hexadecimal: 11be9

Square: 5282527761

Square Root: 269.59413940217615

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 nX3 binary arrays with each 1 adjacent to exactly two other 1s. A183324

a(n) = (n - A007917(n)) * (A007918(n) - n). A72681