Properties of the Number 81432

Eighty-One Thousand Four Hundred Thirty-Two

Basics

Value: 81431 → 81432 → 81433

Parity: even

Prime: No

Previous Prime: 81421

Next Prime: 81439

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 13 × 29

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 13, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111000011000

Octal: 237030

Duodecimal: 3B160

Hexadecimal: 13e18

Square: 6631170624

Square Root: 285.36292681425874

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 different, not necessarily connected, labeled trivalent diagrams of size n. A121357

[ n(n-1)(n-2)(n-3)/7 ]. A11917

Degrees of irreducible representations of Rudvalis group Ru. A3918

Number of length n+5 0..1 arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms. A250329

Start with 1, apply 1->12, 21->21, 22->21, 2->2 (for final 2); a(n) = length of n-th term. A13950

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

RevDecimal(RevBinary(n)), where RevDecimal(m) is the decimal reversal of m (A004086) and RevBinary(m) is the binary reversal of m (A030101). A81432

Number of nX5 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically. A207439