Properties of the Number 72865

Seventy-Two Thousand Eight Hundred Sixty-Five

Basics

Value: 72864 → 72865 → 72866

Parity: odd

Prime: No

Previous Prime: 72859

Next Prime: 72869

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 13 × 19 × 59

Divisors: 1, 5, 13, 19, 59, 65, 95, 247, 295, 767

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001110010100001

Octal: 216241

Duodecimal: 36201

Hexadecimal: 11ca1

Square: 5309308225

Square Root: 269.93517740376114

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 that are the sum of 5 nonzero 8th powers. A3383

Smallest number > 1 equal to sum of n-th powers of its base-7 digits, or 0 if no such number exists (written in base 10). A33839

Base 7 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-7 digits, for some k. A162228

Greatest integer equal to the sum of the n-th powers of its base-7 digits (written in base 10). A162230

Numbers k such that k⁷*2^k - 1 is a prime. A367561

Smallest k > 1 dividing τ(k·n) (cf. A000005). A72865