Properties of the Number 81867

Eighty-One Thousand Eight Hundred Sixty-Seven

Basics

Value: 81866 → 81867 → 81868

Parity: odd

Prime: No

Previous Prime: 81853

Next Prime: 81869

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 29 × 941

Divisors: 1, 3, 29, 87, 941, 2823, 27289, 81867

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111111001011

Octal: 237713

Duodecimal: 3B463

Hexadecimal: 13fcb

Square: 6702205689

Square Root: 286.12409895008847

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

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241). A247689

a(n) = sigma₁₁(2n-1). A81867