Properties of the Number 81976

Eighty-One Thousand Nine Hundred Seventy-Six

Basics

Value: 81975 → 81976 → 81977

Parity: even

Prime: No

Previous Prime: 81973

Next Prime: 82003

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 10247

Divisors: 1, 2, 4, 8, 10247, 20494, 40988, 81976

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000111000

Octal: 240070

Duodecimal: 3B534

Hexadecimal: 14038

Square: 6720064576

Square Root: 286.31451238105274

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 length n+3 0..2 arrays with no disjoint pairs in any consecutive four terms having the same sum. A247720

Expansion of ∏_{k > 0} (1 + f(k)*x^k), where f(1) = 1 and f(m) = prime(m-1) for m >= 2. A152006

For n > 2, a(n) is minimal so that the products of two adjacent terms are distinct Fibonacci numbers. A81976

Number of tilings of a 3 X n rectangle using pentominoes of any shape and monominoes. A278875