Properties of the Number 26720

Twenty-Six Thousand Seven Hundred Twenty

Basics

Value: 26719 → 26720 → 26721

Parity: even

Prime: No

Previous Prime: 26717

Next Prime: 26723

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁵ × 5 × 167

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110100001100000

Octal: 64140

Duodecimal: 13568

Hexadecimal: 6860

Square: 713958400

Square Root: 163.4625339336204

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

G.f.: A(x) = 1/(1 - 2·x*[A₁(x)]^1/2); A₁(x) = 1/(1 - 4·x*[A₂(x)]^1/4); ...; where A_n-1(x) = 1/(1 - 2ⁿ*x*[A_n(x)]^1/2ⁿ) for n>=1 with A₀(x)=A(x). A137984

Number of squarefree bipartite graphs on n vertices. A138347

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 105", based on the 5-celled von Neumann neighborhood. A270162

Numbers k such that Bernoulli number B_k has denominator 230010. A295593

Solutions to A096509[x]=6; number of prime-powers [including primes] in the neighborhood of·with Ceiling[Log[x]] radius equals 6. A96517

G.f. satisfies: A(x) = ∑_n>=0 xⁿ * (A(x) + xⁿ)ⁿ. A248603

Numbers k such that the maximal exponent in the prime factorization of A327860(k) is less than A051903(k), the maximal exponent in the prime factorization of k. A351075

T(n,[ n/2 ]), T given by A026714. A26720