Properties of the Number 27856

Twenty-Seven Thousand Eight Hundred Fifty-Six

Basics

Value: 27855 → 27856 → 27857

Parity: even

Prime: No

Previous Prime: 27851

Next Prime: 27883

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 1741

Divisors: 1, 2, 4, 8, 16, 1741, 3482, 6964, 13928, 27856

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110011010000

Octal: 66320

Duodecimal: 14154

Hexadecimal: 6cd0

Square: 775956736

Square Root: 166.90116836020053

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 read by rows giving the number of configurations of n indistinguishable pairs placed on the vertices of the ladder graph P₂ X P_n such that exactly k such pairs are joined by an edge. A325753

T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0. A265170

Number of n X 2 arrays containing 2 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0. A265167

a(n) = (∑_i=1..n-1 i^n-2) mod n³. A284759

Expansion of e.g.f.: 1/(1-log(1+tanh(x))). A191635

Dan numbers: numbers m of the form 2^j * 3^k such that m +- 1 are twin primes. A27856

Number of tilings of a 6 X n rectangle with right trominoes. A351323