Properties of the Number 81938

Eighty-One Thousand Nine Hundred Thirty-Eight

Basics

Value: 81937 → 81938 → 81939

Parity: even

Prime: No

Previous Prime: 81937

Next Prime: 81943

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 53 × 773

Divisors: 1, 2, 53, 106, 773, 1546, 40969, 81938

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000010010

Octal: 240022

Duodecimal: 3B502

Hexadecimal: 14012

Square: 6713835844

Square Root: 286.2481440987871

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

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (0, 0, 1), (1, 0, -1), (1, 1, -1)}. A148847

a(1) = 1, a(n) = smallest palindromic number > a(n-1) of the form k·a(n-1) - 1. A81938