Properties of the Number 20594

Twenty Thousand Five Hundred Ninety-Four

Basics

Value: 20593 → 20594 → 20595

Parity: even

Prime: No

Previous Prime: 20593

Next Prime: 20599

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 1471

Divisors: 1, 2, 7, 14, 1471, 2942, 10297, 20594

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000001110010

Octal: 50162

Duodecimal: BB02

Hexadecimal: 5072

Square: 424112836

Square Root: 143.5060974314332

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) = T(2n-1,n-2), T given by A026758. A26763

Expansion of e.g.f. 1/(2 - exp(x))^x. A354413

Powers of e^1/e rounded up. A107586

a(n) = 686·n + 14. A157366

Numbers of the form ∏_k=i..j prime(k) - ∑_k=i..j prime(k) where i < j. A387946

Triangle, read by rows, defined by T(n, k) = b(n) - b(k) - b(n-k) + 1, where b(n) = 5·b(n-1) - 4·b(n-2) + 3·b(n-3) - 2·b(n-4) - b(n-5) and b(0) = 0, b(1) = 1, b(2) = 5, b(3) = 21, b(4) = 88. A176483

Numbers k such that k!6 - 3 is prime, where k!6 is the sextuple factorial number (A085158). A279646

E.g.f. A(x) satisfies A(x) = 1/(1 - x·A(x)*(exp(x) - 1)²). A392826

Decimal expansion of (-1 + 3*φ)*sqrt(3 - φ), with the golden section φ = A001622. A385445

Expansion of 1/((1-6x)(1-8x)(1-12x)). A20594