Properties of the Number 81944

Eighty-One Thousand Nine Hundred Forty-Four

Basics

Value: 81943 → 81944 → 81945

Parity: even

Prime: No

Previous Prime: 81943

Next Prime: 81953

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 10243

Divisors: 1, 2, 4, 8, 10243, 20486, 40972, 81944

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000011000

Octal: 240030

Duodecimal: 3B508

Hexadecimal: 14018

Square: 6714819136

Square Root: 286.2586243242289

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

Square array A(n, k) = A329644(prime(n)^k), read by falling antidiagonals: (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), ... A329637

Numbers k such that both k*(k+1) - 1 and k*(k-1) - 1 are primes. A81944