Properties of the Number 81372

Eighty-One Thousand Three Hundred Seventy-Two

Basics

Value: 81371 → 81372 → 81373

Parity: even

Prime: No

Previous Prime: 81371

Next Prime: 81373

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 6781

Divisors: 1, 2, 3, 4, 6, 12, 6781, 13562, 20343, 27124

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011110111011100

Octal: 236734

Duodecimal: 3B110

Hexadecimal: 13ddc

Square: 6621402384

Square Root: 285.2577781586332

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

Averages of twin prime pairs that are sums of 5 consecutive averages of twin prime pairs. A160919

Numbers m such that the decimal digits of m are exactly the same as those of all the indices corresponding to the prime factors of m. A287916

a(n) is the number of j from 1 to n such that binomial(n,j) is divisible by j. A81372