Properties of the Number 91286

Ninety-One Thousand Two Hundred Eighty-Six

Basics

Value: 91285 → 91286 → 91287

Parity: even

Prime: No

Previous Prime: 91283

Next Prime: 91291

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 13 × 3511

Divisors: 1, 2, 13, 26, 3511, 7022, 45643, 91286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010010010110

Octal: 262226

Duodecimal: 449B2

Hexadecimal: 16496

Square: 8333133796

Square Root: 302.1357310878672

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 (1 - x + x²)/(1 - x - x⁴). A103632

Row sums of a triangle related to the Fibonacci polynomials. A109222

Losing initial positions in game: two players alternate in removing >= 1 stones; last player wins; first player may not remove all stones; each move <= 3 times previous move. A3411

Numbers in Morse code, with 1 for a dot, 2 for a dash and 0 between digits/letters and then converted from base 3 to base 10. A60110

Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-4)/2. A48063

Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n+3)/3. A48085

Smallest losing position after your opponent has taken k stones in a variation of "Fibonacci Nim". A54736

Numbers n such that sigma₃(n) is divisible by square of cototient of n, while n is not a prime number. A91286

Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A281804