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Properties of the Number 26670

Twenty-Six Thousand Six Hundred Seventy

Basics

Value: 26669 → 26670 → 26671

Parity: even

Prime: No

Previous Prime: 26669

Next Prime: 26681

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 7 × 127

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100000101110

Octal: 64056

Duodecimal: 13526

Hexadecimal: 682e

Square: 711288900

Square Root: 163.30952207388276

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

T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A279466
T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A299528
Composite numbers k such that σ(k)*(φ(k) + 2) is a square. A65655
Triangle read by rows: T(n,k) is number of labeled bipartite graphs with n nodes and k edges. A117279
Expansion of e.g.f. 1/(1 - x/(1 - (x2/2!)/(1 - (x3/3!)/(1 - (x4/4!)/(1 - (x5/5!)/(1 -... (xn/n!)/(1 -...))))))), a continued fraction. A257544
Number of nonseparable toroidal tree-rooted maps with n + 3 edges and n + 1 vertices. A6415
Numbers k such that sum of 9th powers of divisors of k is divisible by the square of Euler-φ of k. A94468
Expansion of e.g.f. 1/(1 - x/(1 - x2/(2 - x3/(3 - x4/(4 - x5/(5 - x6/(6 - x7/(7 - ...)))))))), a continued fraction. A295944
Number of graphs on n nodes with 3 cliques. A5289
Half the number of length n integer sequences with sum zero and sum of squares 6498. A157589