Properties of the Number 81950

Eighty-One Thousand Nine Hundred Fifty

Basics

Value: 81949 → 81950 → 81951

Parity: even

Prime: No

Previous Prime: 81943

Next Prime: 81953

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 ² × 11 × 149

Divisors: 1, 2, 5, 10, 11, 22, 25, 50, 55, 110

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100000000011110

Octal: 240036

Duodecimal: 3B512

Hexadecimal: 1401e

Square: 6715802500

Square Root: 286.26910416599276

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

Consider the 2ⁿ compositions of n and count only those ending in an even part. A123639

Partial sums of sequence A177342. A178073

Smallest triangular number k such that k-1 has exactly n (not necessarily distinct) prime factors. A81950