Properties of the Number 26805

Twenty-Six Thousand Eight Hundred Five

Basics

Value: 26804 → 26805 → 26806

Parity: odd

Prime: No

Previous Prime: 26801

Next Prime: 26813

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 1787

Divisors: 1, 3, 5, 15, 1787, 5361, 8935, 26805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100010110101

Octal: 64265

Duodecimal: 13619

Hexadecimal: 68b5

Square: 718508025

Square Root: 163.72232590578477

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

Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic residues mod p that are < p/2. A282721

Composites that are the sum of two, three, four and five consecutive composite numbers. A151745

Number of partitions of n in which the least part is even. A26805

Number of nX6 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) or (-1,0) and new values introduced in order 0..2. A274726

Number of 6Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2. A276303