Properties of the Number 91238

Ninety-One Thousand Two Hundred Thirty-Eight

Basics

Value: 91237 → 91238 → 91239

Parity: even

Prime: No

Previous Prime: 91237

Next Prime: 91243

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 7 ⁴ × 19

Divisors: 1, 2, 7, 14, 19, 38, 49, 98, 133, 266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010001100110

Octal: 262146

Duodecimal: 44972

Hexadecimal: 16466

Square: 8324372644

Square Root: 302.0562861454799

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

Expansion of x*(1-3·x)*(1-x)/(1-7·x+14·x²-7·x³). A122068

Numbers k such that k | 12^k + 11^k + 1. A57293

Numbers for which the number of prime divisors counted with multiplicity and the sum of the distinct prime divisors are both perfect. A233563

First term of n-th difference sequence of round((k*π)), k >= 0. A325846

Let spm(n) be the sum of all prime factors of n counted with multiplicities (A001414); sequence gives numbers n such that spm(n+spm(n)) divides both n and n+spm(n). A131564

Number of nodes in rooted tree with GF2X-Matula number n. A91238

Array read by ascending antidiagonals: A(n,k) = A376484/(2·n+1). A376499