Properties of the Number 81128

Eighty-One Thousand One Hundred Twenty-Eight

Basics

Value: 81127 → 81128 → 81129

Parity: even

Prime: No

Previous Prime: 81119

Next Prime: 81131

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 10141

Divisors: 1, 2, 4, 8, 10141, 20282, 40564, 81128

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011110011101000

Octal: 236350

Duodecimal: 3AB48

Hexadecimal: 13ce8

Square: 6581752384

Square Root: 284.829773724588

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

Expansion of ∑_k>=0 x^k² / ∏_j=1..k (1 - x^j)^j. A318771

12th binomial transform of (0,1,0,0,0,0,0,0,...). A81128