Properties of the Number 78018

Seventy-Eight Thousand Eighteen

Basics

Value: 78017 → 78018 → 78019

Parity: even

Prime: No

Previous Prime: 78017

Next Prime: 78031

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13003

Divisors: 1, 2, 3, 6, 13003, 26006, 39009, 78018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011000011000010

Octal: 230302

Duodecimal: 39196

Hexadecimal: 130c2

Square: 6086808324

Square Root: 279.3170241857807

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

Expansion of ∏_k>=1 ((1 + x^k²) / (1 - x^k²))^k². A291666

a(n) = ∑_k=0..n 6^k*N(n,k), with a(0)=1, where N(n,k) = C(n,k) * C(n,k+1)/n are the Narayana numbers (A001263). A78018