Properties of the Number 78138

Seventy-Eight Thousand One Hundred Thirty-Eight

Basics

Value: 78137 → 78138 → 78139

Parity: even

Prime: No

Previous Prime: 78137

Next Prime: 78139

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 1447

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 1447, 2894

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011000100111010

Octal: 230472

Duodecimal: 39276

Hexadecimal: 1313a

Square: 6105547044

Square Root: 279.5317513271077

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 4 consecutive averages of twin prime pairs. A160918

Irregular triangle read by rows: T(n,k) is the number of n X n tic-tac-toe positions (up to rotation and reflection) with k tokens (i.e., after k plays) which allow a winning strategy for X (n > 0, 0 <= k <= n²). A317573

Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7. A252379

Primes which can be written as sum of squares > 1. A78138