Properties of the Number 26691

Twenty-Six Thousand Six Hundred Ninety-One

Basics

Value: 26690 → 26691 → 26692

Parity: odd

Prime: No

Previous Prime: 26687

Next Prime: 26693

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 31 × 41

Divisors: 1, 3, 7, 21, 31, 41, 93, 123, 217, 287

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100001000011

Octal: 64103

Duodecimal: 13543

Hexadecimal: 6843

Square: 712409481

Square Root: 163.37380450978057

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

Numbers in base 10 that are palindromic in bases 5 and 6. A97930

Number of n-step mappings with 4 inputs. A5945

Numbers k such that ω(k) = 4 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where ω(k) = A001221(k). A383728

Numbers n such that sum of distinct primes dividing n is divisible by the largest prime dividing n. Also n is neither a prime, nor a true power of prime and n is squarefree. Squarefree solutions of A071140. A71141

a(n) = a(n-1) + 2·a(floor(n/2)) if n > 0, otherwise 1. A58039

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood. A281676

Number of 2-colorings of an 4 X 4 X 4 grid, up to rotational symmetry, by the number of black cells. A386554

Squarefree numbers k such that the largest prime factor of k is equal to the sum of the other prime factors of k. A71312

Numbers that are nontrivially palindromic in two or more consecutive integer bases with non-constant number of digits . A327810

Numbers n such that the sum of the distinct prime divisors of n that are congruent to 1 mod 4 equals the sum of the distinct prime divisors congruent to 3 mod 4. A215949