Properties of the Number 81170

Eighty-One Thousand One Hundred Seventy

Basics

Value: 81169 → 81170 → 81171

Parity: even

Prime: No

Previous Prime: 81163

Next Prime: 81173

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 8117

Divisors: 1, 2, 5, 10, 8117, 16234, 40585, 81170

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110100010010

Octal: 236422

Duodecimal: 3AB82

Hexadecimal: 13d12

Square: 6588568900

Square Root: 284.9034924320866

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

Triangle T(n,d) read by rows: the number of mixed trees with n>=1 nodes and 0<=d<n arcs. A335362

Engel expansion of ∑_k>=0 1/(10 + k)^k. A63193

Triangle in which n-th row gives trajectory of n (including n itself) under the map x -> x/2 if·is even, x -> x-3 if·is odd, stopping when reach 0 or 1. A81170