Properties of the Number 81798

Eighty-One Thousand Seven Hundred Ninety-Eight

Basics

Value: 81797 → 81798 → 81799

Parity: even

Prime: No

Previous Prime: 81773

Next Prime: 81799

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13633

Divisors: 1, 2, 3, 6, 13633, 27266, 40899, 81798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111110000110

Octal: 237606

Duodecimal: 3B406

Hexadecimal: 13f86

Square: 6690912804

Square Root: 286.00349648212347

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 one-sided polyarcs with n cells. A353979

Number of (n+2)X(3+2) 0..4 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order. A252806

Number of nX3 0..1 arrays with every element unequal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A317818

a(n) = ∑_{k = 0..n} C(n,k) * C(n+k,k) * C(n+2·k,k). A81798