Properties of the Number 81444

Eighty-One Thousand Four Hundred Forty-Four

Basics

Value: 81443 → 81444 → 81445

Parity: even

Prime: No

Previous Prime: 81439

Next Prime: 81457

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 11 × 617

Divisors: 1, 2, 3, 4, 6, 11, 12, 22, 33, 44

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000100100

Octal: 237044

Duodecimal: 3B170

Hexadecimal: 13e24

Square: 6633125136

Square Root: 285.38395189638817

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

Triangle of numbers associated with Genocchi numbers. A14784

Sorted entries in triangle in A014784. A35003

Second column of triangle A014784. A102078

Numbers whose base-5 representation has exactly 8 runs. A43608

Second binomial transform of expansion of cosh(sinh(x)). A81444