Properties of the Number 91008

Ninety-One Thousand Eight

Basics

Value: 91007 → 91008 → 91009

Parity: even

Prime: No

Previous Prime: 90997

Next Prime: 91009

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁷ × 3 ² × 79

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10110001110000000

Octal: 261600

Duodecimal: 44800

Hexadecimal: 16380

Square: 8282456064

Square Root: 301.67532215943686

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 subsets of {1...n} containing no prime indices of the elements. A324741

Numbers k such that 21·2^k+1 is prime. A32360

Triangle T(n,k) read by rows giving number of inequivalent binary linear [n,k] codes with all columns distinct (projective codes) (n >= 1, 1 <= k <= n). A91008

Numbers k such that σ(k) = ψ(k) + φ(k) + ω(k)⁵. A391448

Number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having zero permanent. A206467