Properties of the Number 78816

Seventy-Eight Thousand Eight Hundred Sixteen

Basics

Value: 78815 → 78816 → 78817

Parity: even

Prime: No

Previous Prime: 78809

Next Prime: 78823

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ⁵ × 3 × 821

Divisors: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001111100000

Octal: 231740

Duodecimal: 39740

Hexadecimal: 133e0

Square: 6211961856

Square Root: 280.7418743258654

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 -n..n arrays x(0..4) of 5 elements with zero sum and elements alternately strictly increasing and strictly decreasing. A200059

Erroneous version of A081846. A78816

Number of (n+1)X(2+1) arrays of permutations of 0..n·3+2 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0. A264485