Properties of the Number 26191

Twenty-Six Thousand One Hundred Ninety-One

Basics

Value: 26190 → 26191 → 26192

Parity: odd

Prime: No

Previous Prime: 26189

Next Prime: 26203

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 11 × 2381

Divisors: 1, 11, 2381, 26191

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011001001111

Octal: 63117

Duodecimal: 131A7

Hexadecimal: 664f

Square: 685968481

Square Root: 161.8363370816332

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

(1/8) * number of ways to select 3 distinct points forming a triangle of unsigned area = 1 from a square of grid points with side length n. A320544

Expansion of ∏_k>=1 (1 + x^k)^A002131(k). A301798

Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 - 2·x²)/(1 - 4·x + x² + 2·x³). A180144

Number of length 3+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth. A248540

T(n,n), array T as in A047089. A47091

Position of n in A026190. A26191