Properties of the Number 78216

Seventy-Eight Thousand Two Hundred Sixteen

Basics

Value: 78215 → 78216 → 78217

Parity: even

Prime: No

Previous Prime: 78203

Next Prime: 78229

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 3259

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 3259, 6518

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000110001000

Octal: 230610

Duodecimal: 39320

Hexadecimal: 13188

Square: 6117742656

Square Root: 279.6712355606132

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

a(n) is the number of distinct triangles whose sides do not pass through a grid point and whose vertices are three points of an n X n grid. A372217

Number of 1:3:sqrt(10) proportioned triangles on a (n+1) X (n+1) grid. A190102

Number of inequivalent n X 3 binary matrices, where equivalence means permutations of rows or columns or the symbol set. A246148

Numbers k whose decimal representation, read as a base-18 value and divided by k, yields an integer. A32567

Number of (n+1) X (3+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock. A235949

a(n) = A078215(n)^1/2. A78216