Properties of the Number 23638

Twenty-Three Thousand Six Hundred Thirty-Eight

Basics

Value: 23637 → 23638 → 23639

Parity: even

Prime: No

Previous Prime: 23633

Next Prime: 23663

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 53 × 223

Divisors: 1, 2, 53, 106, 223, 446, 11819, 23638

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101110001010110

Octal: 56126

Duodecimal: 1181A

Hexadecimal: 5c56

Square: 558755044

Square Root: 153.7465446766203

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

a(n) = IntegerPart(PolyGamma(n, 4)). A144170

Number of permutations sortable by a double-ended queue. A182216

Polylogarithm li(-n,-2/9) multiplied by (11ⁿ⁺¹)/9. A213136

Triangle, T(n, k) = coefficients [x^k]( p(x,n) ), where p(x, n) = (x+1)ⁿ for n < 2, otherwise (x+1)ⁿ + x*((1+x)^n-2 + 2^n-2*(1-x)^n-1*LerchPhi(x, 2-n, 1/2)), read by rows. A147566

Number of binary codes (not necessarily linear) of length n with 3 words. A34198

Expansion of (2·x⁴+x³+x)/(-x²-2·x+1). A265107

The number of plain λ terms presented by de Bruijn indices, see Bendkowski et al., where zeros have no weight. A258973

Vertex-transitive graphs of valency 11 with 2n nodes. A23638

Irregular triangle read by rows: T(n,k) is the number of distinct Wilf classes of subsets of exactly k patterns in S_n, for 0 <= k <= n!. A346624