Properties of the Number 26020

Twenty-Six Thousand Twenty

Basics

Value: 26019 → 26020 → 26021

Parity: even

Prime: No

Previous Prime: 26017

Next Prime: 26021

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 1301

Divisors: 1, 2, 4, 5, 10, 20, 1301, 2602, 5204, 6505

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110010110100100

Octal: 62644

Duodecimal: 13084

Hexadecimal: 65a4

Square: 677040400

Square Root: 161.3071604114337

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

Coordination sequence for (3,3,7) tiling of hyperbolic plane. A265074

a(n) = 1000·n + 20. A157510

Numerators of continued fraction convergents to sqrt(434). A41826

Numbers k such that k and k² use only the digits 0, 2, 4, 6 and 7. A136903

Partial sums of A174928. A174929

Partial sums of A002025. A180219

a(n) = L(9·n)/L(n) where L(n) = Lucas number A000204(n). A153177

a(n) = binomial(4n, n) - binomial(4n, n - 3). A26020

Triangle read by rows: T(n,k) is the number of permutations p of [n] such that the number of inversions of the word formed by the leading entries of the blocks of p is k. A block of a permutation is a maximal sequence of consecutive integers which appear in consecutive positions. For example, the permutation 5412367 has 4 blocks: 5, 4, 123, and 67; their leading entries are 5,4,1, and 6 and the word 5416 has 3 inversions. A186372

Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 nX6 array. A218808