Properties of the Number 81326

Eighty-One Thousand Three Hundred Twenty-Six

Basics

Value: 81325 → 81326 → 81327

Parity: even

Prime: No

Previous Prime: 81307

Next Prime: 81331

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 37 × 157

Divisors: 1, 2, 7, 14, 37, 74, 157, 259, 314, 518

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110110101110

Octal: 236656

Duodecimal: 3B092

Hexadecimal: 13dae

Square: 6613918276

Square Root: 285.1771379336008

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 ways to write n as an ordered sum of 7 prime powers (including 1). A341136

Fifth diagonal of triangle A064094. A64096

Number of sequences of length n over {1, -1} with Erdős discrepancy <= 2. A181740

First of three consecutive Ulam numbers (A002858) in arithmetic progression with difference 22. A68856

Coefficients in the expansion of C⁵/B⁶, in Watson's notation of page 118. A160533

Number of partitions of n into two 3-smooth numbers. A81326