Properties of the Number 91888

Ninety-One Thousand Eight Hundred Eighty-Eight

Basics

Value: 91887 → 91888 → 91889

Parity: even

Prime: No

Previous Prime: 91873

Next Prime: 91909

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 5743

Divisors: 1, 2, 4, 8, 16, 5743, 11486, 22972, 45944, 91888

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110011011110000

Octal: 263360

Duodecimal: 45214

Hexadecimal: 166f0

Square: 8443404544

Square Root: 303.1303350045983

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

T(n,k)=Number of length n+4 0..k arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two. A249001

Expansion of e.g.f. sinh(x)*sin(tan(x))/2, even powers only. A24247

Number of length n+4 0..3 arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two. A248996

Number of length 5+4 0..n arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two. A249006

Irregularity index of prime(n): number of numbers k, 1 <= k <= (p-3)/2, such that p = prime(n) divides the numerator of the Bernoulli number B(2k). A91888