Properties of the Number 26875

Twenty-Six Thousand Eight Hundred Seventy-Five

Basics

Value: 26874 → 26875 → 26876

Parity: odd

Prime: No

Previous Prime: 26863

Next Prime: 26879

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 ⁴ × 43

Divisors: 1, 5, 25, 43, 125, 215, 625, 1075, 5375, 26875

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100011111011

Octal: 64373

Duodecimal: 13677

Hexadecimal: 68fb

Square: 722265625

Square Root: 163.93596310755

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

Triangle T(n,k) of the number of strongly connected digraphs on n labeled nodes and with k arcs, k=0..n*(n-1). A57273

a(n) = ∑_k=0..n(binomial(n-1,n-k)*binomial(n+k-1,n-k)). A262442

Odd composites (including 1 in the count) where the number 3 mod 4 equals the number 1 mod 4. A93181

a(n) = (2·n - 7)*n². A15242

Expansion of 1/(1-x³-x⁴-x⁵-x⁶-x⁷-x⁸-x⁹). A17822

Triangle read by rows: T(n,k) is the number of directed column-convex polyominoes of area n and having k cells in the shortest column (1<=k<=n). A121301

Numbers k such that k and k² use only the digits 2, 5, 6, 7 and 8. A137111

Number of 5-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions. A187510

Number of directed column-convex polyominoes having at least one 1-cell column. A121302

Number of involutions of length 2n which are invariant under the reverse-complement map and have no decreasing subsequences of length 8. A145870