Properties of the Number -2886

Eight Hundred Eighty-Six

Basics

Value: -2887 → -2886 → -2885

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13 × 37

Divisors: 1, 2, 3, 6, 13, 26, 37, 39, 74, 78

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101000110

Octal: -5506

Duodecimal: -1806

Hexadecimal: -b46

Square: 8328996

Square Root: 53.72150407425317

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 (ψ(-q) / f(q³))² in powers of q where ψ(), f() are Ramanujan θ functions. A262930

Expansion of ψ(q) * ψ(q²) * ψ(q⁶) / ψ(q³)³ in powers of q where ψ() is a Ramanujan θ function. A213265

Expansion of c(q⁴) / c(q) in powers of q where c() is a cubic AGM θ function. A123649

Expansion of q * (ψ(q) / ψ(q²)) / (ψ(q³) / ψ(q⁶))³ in powers of q where ψ() is a Ramanujan θ function. A187153

Expansion of (ψ(-x³) / f(x))² in powers of·where ψ(), f() are Ramanujan θ functions. A261369

Coordination sequence for "crs" 3D uniform tiling formed from tetrahedra and truncated tetrahedra. A299268

a(n) = 2·n² - 2. A54000

Number of regions that the line segments in A091908(n) cut the equilateral triangle into. A92098

Numbers k such that k³ divides 5^k² - 1. A177905

T(n,k)=Number of nXk 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281400