Properties of the Number 81622

Eighty-One Thousand Six Hundred Twenty-Two

Basics

Value: 81621 → 81622 → 81623

Parity: even

Prime: No

Previous Prime: 81619

Next Prime: 81629

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 37 × 1103

Divisors: 1, 2, 37, 74, 1103, 2206, 40811, 81622

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111011010110

Octal: 237326

Duodecimal: 3B29A

Hexadecimal: 13ed6

Square: 6662150884

Square Root: 285.69564224887995

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 permutations of length n which avoid the patterns 123 and 4312. A116699

Number of one-bit dominant primes (A095070) in range ]2ⁿ,2ⁿ⁺¹]. A95020

Number of A095286-primes in range ]2ⁿ,2ⁿ⁺¹]. A95296

List of coefficients of chromatic polynomial of icosahedron, highest order terms first. A296917

Positions of A080313 in A014486. A80312

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2. A255223

A Graham-Pollak-like sequence with multiplier 3 instead of 2. A100671

Number of n-colorings of the icosahedral graph. A218514

Number of 6-core partitions of n. A81622

List of coefficients of reduced chromatic polynomial of icosahedron, highest order terms first. A296916