Properties of the Number 81712

Eighty-One Thousand Seven Hundred Twelve

Basics

Value: 81711 → 81712 → 81713

Parity: even

Prime: No

Previous Prime: 81707

Next Prime: 81727

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5107

Divisors: 1, 2, 4, 8, 16, 5107, 10214, 20428, 40856, 81712

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100110000

Octal: 237460

Duodecimal: 3B354

Hexadecimal: 13f30

Square: 6676850944

Square Root: 285.85310913124596

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 n and n-1 are differences between 2 positive cubes in at least one way. A38595

Coefficients in the expansion of 1/([r]-[2·r]*x+[3·r]*x²-...); []=floor, r=3·e/5. A288232

Coefficients in the expansion of 1/([r]-[2r]x+[3r]x²-...); [ ]=floor, r=13/8. A289261

Numbers k such that k! - k# + 1 is prime, where k# is the primorial function. A81712