Properties of the Number 47188

Forty-Seven Thousand One Hundred Eighty-Eight

Basics

Value: 47187 → 47188 → 47189

Parity: even

Prime: No

Previous Prime: 47161

Next Prime: 47189

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 47 × 251

Divisors: 1, 2, 4, 47, 94, 188, 251, 502, 1004, 11797

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011100001010100

Octal: 134124

Duodecimal: 23384

Hexadecimal: b854

Square: 2226707344

Square Root: 217.22799082991125

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 of B-analogs of Stirling numbers of the second kind. A39755

Expansion of 1/((1-x)(1-3x)(1-5x)). A16209

G.f.: (1 + 5·x + 5·x² + x³)/∏_i=1..10 (1 - xⁱ). A256977

Triangle of B-analogs of Stirling numbers of 2nd kind. A39756

G.f. A(x) satisfies: A(x) = x + x² * exp(2 * ∑_k>=1 A(x^k) / k). A345200

a(n) = A024955(n+3)/7. A24956

Partial sums of A053872. A155974

Number of active (ON, black) cells at stage 2ⁿ-1 of the two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood. A270892

Numbers k such that (86·10^k - 221)/9 is prime. A288823

Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n-2)/2. A47188