Properties of the Number 81986

Eighty-One Thousand Nine Hundred Eighty-Six

Basics

Value: 81985 → 81986 → 81987

Parity: even

Prime: No

Previous Prime: 81973

Next Prime: 82003

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 40993

Divisors: 1, 2, 40993, 81986

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100000001000010

Octal: 240102

Duodecimal: 3B542

Hexadecimal: 14042

Square: 6721704196

Square Root: 286.33197516169935

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 that are the least element of a k-cycle (k > 1) of permutation A113821. A115641

a(n) = {A081984(n)-1}/d, where d is the product of nonzero digits of A081984(n). A81986