Properties of the Number 81829

Eighty-One Thousand Eight Hundred Twenty-Nine

Basics

Value: 81828 → 81829 → 81830

Parity: odd

Prime: No

Previous Prime: 81817

Next Prime: 81839

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 11 × 43 × 173

Divisors: 1, 11, 43, 173, 473, 1903, 7439, 81829

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111110100101

Octal: 237645

Duodecimal: 3B431

Hexadecimal: 13fa5

Square: 6695985241

Square Root: 286.05768648998054

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

Least k such that 1/τ(k) + 1/τ(k+1) + 1/τ(k+2) + ... + 1/τ(k+n) is equal to 1 (where τ(k)=A000005(k) is the number of divisors of k). A73545

Numbers k such that the k-th term of Hofstadter Q-sequence is > (k+1)-th term. A81829