Properties of the Number 26815

Twenty-Six Thousand Eight Hundred Fifteen

Basics

Value: 26814 → 26815 → 26816

Parity: odd

Prime: No

Previous Prime: 26813

Next Prime: 26821

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 31 × 173

Divisors: 1, 5, 31, 155, 173, 865, 5363, 26815

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100010111111

Octal: 64277

Duodecimal: 13627

Hexadecimal: 68bf

Square: 719044225

Square Root: 163.75286257039906

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

Number of vertices in a regular drawing of the complete bipartite graph K_n,n. A331755

Numbers k > 1 such that, in base 6, k and k² contain the same digits in the same proportion. A61660

Positions of non-crossing fixed-point-free involutions (encoded by A014486) in A055089, sorted to ascending order. A64640

Positions of non-crossing fixed-point-free involutions encoded by A014486 in A055089. Permutation of A064640. A64638

Terms k of A002977 such that both (k-1)/2 and (k-1)/3 are also terms of A002977. A85249

a(n) = A047980(2n). A47981

First appearance of n in A016014, or 0 if n never occurs. A239800

Base-9 palindromes that start with 4. A43031

Positions of non-crossing fixed-point-free involutions encoded by A014486 (after reflection) in A055089. Permutation of A064640. A64639

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 545", based on the 5-celled von Neumann neighborhood. A272836