Properties of the Number -20512

Twenty Thousand Five Hundred Twelve

Basics

Value: -20513 → -20512 → -20511

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 641

Divisors: 1, 2, 4, 8, 16, 32, 641, 1282, 2564, 5128

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000000100000

Octal: -50040

Duodecimal: -BA54

Hexadecimal: -5020

Square: 420742144

Square Root: 143.22011031974526

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

Expansion of (1-x²)/(1-x-x²+x³+x⁴). A101496

Number of pairs of rabbits when there are 3 pairs per litter and offspring reach parenthood after 3 gestation periods; a(n) = a(n-1) + 3·a(n-3), with a(0) = a(1) = a(2) = 1. A84386

Positions of zeros in A345055, which is the Dirichlet inverse of A011772. A345053

Spherical growth function of the Lamplighter group L₂ with respect to the standard generators a, t. A288348

Number of closed binary words of length n that are not privileged. A297184

Numbers in A086473 corresponding to the unique product of two numbers having the unique sum of A086533. A86860

θ series of direct sum of 2 copies of f.c.c. lattice. A8663

Conjectured formula for irreducible 6-fold Euler sums of weight 2n+16. A19459

Numbers k that divide 4^k + 2^k or 8^k + 4^k. A45577

Expansion of series related to Liouville's Last Theorem: g.f. ∑_t>0 (-1)^t+1 *x^t*(t+1/2) / ( (1-x^t)⁴ *∏_i=1..t (1-xⁱ) ). A59821