Properties of the Number 38040

Thirty-Eight Thousand Forty

Basics

Value: 38039 → 38040 → 38041

Parity: even

Prime: No

Previous Prime: 38039

Next Prime: 38047

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 317

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001010010011000

Octal: 112230

Duodecimal: 1A020

Hexadecimal: 9498

Square: 1447041600

Square Root: 195.03845774615837

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

Number of n-element unlabeled ordered T₀-antichains; T₁-hypergraphs (with empty hyperedge but without multiple hyperedges) on n labeled nodes. A59052

Number of sets of subsets of {1..n} covering all n vertices whose dual is a (strict) antichain, also called covering T₁ sets of subsets. A326960

Expansion of e.g.f. exp((sin(x) + sinh(x))/2). A306347

a(n) = 1728·n + 24. A157325

a(n) = 40*(200·n - 49). A157652

a(0) = 1; a(n) = ∑_{k=0..floor((n-1)/4)} binomial(n-1,4·k) * a(k) * a(n-4·k-1). A351969

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 26. A31704

a(n) = 225·n² + 15. A158557

a(n) = 169·n² + n. A173275

The Wiener index of the Dutch windmill graph D(5,n) (n>=1). A180579