Properties of the Number 81998

Eighty-One Thousand Nine Hundred Ninety-Eight

Basics

Value: 81997 → 81998 → 81999

Parity: even

Prime: No

Previous Prime: 81973

Next Prime: 82003

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 5857

Divisors: 1, 2, 7, 14, 5857, 11714, 40999, 81998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000001001110

Octal: 240116

Duodecimal: 3B552

Hexadecimal: 1404e

Square: 6723672004

Square Root: 286.3529290927543

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 k such that 3^k + 8 is prime. A217136

Square array read by antidiagonals, alternating upwards and downwards: T(i, j) is the least number that is greater than the previous term and coprime to every number on the same row or column. A81998