Properties of the Number 68222

Sixty-Eight Thousand Two Hundred Twenty-Two

Basics

Value: 68221 → 68222 → 68223

Parity: even

Prime: No

Previous Prime: 68219

Next Prime: 68227

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 11 × 443

Divisors: 1, 2, 7, 11, 14, 22, 77, 154, 443, 886

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10000101001111110

Octal: 205176

Duodecimal: 33592

Hexadecimal: 10a7e

Square: 4654241284

Square Root: 261.1934149246493

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 equivalence classes of Dyck paths of semilength n for the string duu. A274115

Number of equivalence classes of ballot paths of length n for the string ddu. A274112

a(n) = ∑_k=0..n (4·k+1) * binomial(2·n+2·k+1,n-k)/(2·n+2·k+1). A390527

An auxiliary bit-mask sequence for computing A066425. (The "dirty", unsymmetric one). A68222