Properties of the Number 26660

Twenty-Six Thousand Six Hundred Sixty

Basics

Value: 26659 → 26660 → 26661

Parity: even

Prime: No

Previous Prime: 26647

Next Prime: 26669

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 31 × 43

Divisors: 1, 2, 4, 5, 10, 20, 31, 43, 62, 86

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100000100100

Octal: 64044

Duodecimal: 13518

Hexadecimal: 6824

Square: 710755600

Square Root: 163.2789024950866

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

Array read by antidiagonals: T(m,n) is the number of independent sets in the stacked prism graph C_m X P_n. A286513

Number of partitions p of n such that mean(p) <= multiplicity(min(p)). A240204

Expansion of ∏_n>0 ((1-xⁿ)/(1+xⁿ))ⁿ in powers of x. A285675

a(n) = ∑_k=1..n ∑_j=1..k (prime(k) - prime(j))². A62022

Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >= n. A211061

Number of (w,x,y) with all terms in {0,...,n} and w < range{w,x,y}. A212967

Numbers m > 0 that have a divisor d > 1 with binomial(m+d, d) == 1 mod m. A290040

Number of independent sets of nodes in P₄ X C_n (n > 2). A50401

Number of independent sets of nodes in graph C₆ x P_n (n>=0). A181961

Number of permutations of [n] where each pair of adjacent elements is coprime and does not differ by a prime. A368958