Properties of the Number 26640

Twenty-Six Thousand Six Hundred Forty

Basics

Value: 26639 → 26640 → 26641

Parity: even

Prime: No

Previous Prime: 26633

Next Prime: 26641

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 5 × 37

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100000010000

Octal: 64020

Duodecimal: 13500

Hexadecimal: 6810

Square: 709689600

Square Root: 163.21764610482532

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

Every run of digits of n in base 3 has length 2. A33001

Sum of all the parts in the partitions of n into 9 squarefree parts. A326523

Expansion of (1 / theta₄(x) - 1)³ / 8. A341364

Numbers m such that the smallest digit in the decimal expansion of 1/m is 3, ignoring leading and trailing 0's. A352157

a(n) = (n+1)*(n-2)*(n-3)/2. A212343

Numbers with prime factorization pqr^2s^4. A190107

The number of positive integer sequences of length n with no duplicate substrings of length greater than 1, every number different from its neighbors, and a minimal product (= A282169(n)). A284434

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+2401)² = y². A118630

Number of 4-cycles in the n-polygon diagonal intersection graph. A300552

The number of permutations of n cards in which 4 will be the next hit after 2. A18932