Properties of the Number 72781

Seventy-Two Thousand Seven Hundred Eighty-One

Basics

Value: 72780 → 72781 → 72782

Parity: odd

Prime: No

Previous Prime: 72767

Next Prime: 72797

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 73 × 997

Divisors: 1, 73, 997, 72781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110001001101

Octal: 216115

Duodecimal: 36151

Hexadecimal: 11c4d

Square: 5297073961

Square Root: 269.77953962448674

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

Numbers n such that the trinomial xⁿ-x-1 is irreducible over GF(3). A223938

Number of partitions of n into an even number of relatively prime parts. A339397

X-projection of the tabular N X N -> N bijection A072735. A72781