Properties of the Number 81724

Eighty-One Thousand Seven Hundred Twenty-Four

Basics

Value: 81723 → 81724 → 81725

Parity: even

Prime: No

Previous Prime: 81707

Next Prime: 81727

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 20431

Divisors: 1, 2, 4, 20431, 40862, 81724

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100111100

Octal: 237474

Duodecimal: 3B364

Hexadecimal: 13f3c

Square: 6678812176

Square Root: 285.8740981621105

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 achiral simplicial 4-clusters with n cells. A182299

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 0, 1), (1, 0, 1), (1, 1, 0)}. A151114

Let b(n)=floor((3/2)ⁿ), c(n)=floor((4/3)ⁿ), d(n)=floor((5/4)ⁿ); sequence gives values of n such that b(n+1)/b(n)=3/2, c(n+1)/c(n)=4/3 and d(n+1)/d(n)=5/4. A81724