Properties of the Number 81198

Eighty-One Thousand One Hundred Ninety-Eight

Basics

Value: 81197 → 81198 → 81199

Parity: even

Prime: No

Previous Prime: 81197

Next Prime: 81199

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 13 × 347

Divisors: 1, 2, 3, 6, 9, 13, 18, 26, 39, 78

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110100101110

Octal: 236456

Duodecimal: 3ABA6

Hexadecimal: 13d2e

Square: 6593115204

Square Root: 284.95262764185907

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

a(n) = 2·n³ - 4·n² + 10·n - 2 (n>=1). A304161

Number of 3 X n 0..1 arrays with rows, diagonals and antidiagonals unimodal. A223670

Smallest stack size with an unentailed Grundy value of 2ⁿ in Top Entails. A81198