Properties of the Number -2160

One Hundred Sixty

Basics

Value: -2161 → -2160 → -2159

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ³ × 5

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100001110000

Octal: -4160

Duodecimal: -1300

Hexadecimal: -870

Square: 4665600

Square Root: 46.475800154489

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Coefficients in expansion of Eisenstein series E₂ (also called E₁ or G₂). A6352

Triangular array of the coefficients of the sequence of Abel polynomials A(n,x) := x*(x-n)^n-1. A137452

Inverse Euler transform of the Moebius function A008683. A320781

Express the ∑_n>=0 p(n)*xⁿ, where p(n) is the partition function, as a product ∏_k>=1 (1 + a(k)*x^k). A220420

Triangle read by rows, numerators of coefficients (in rising powers) of rational polynomials P(n, x) such that Integral_x=0..1 P'(n, x) = Bernoulli(n, 1). A290694

a(n) = A048250(n) * A345001(n). A344999

Expansion of φ(q⁴) / φ(q) in powers of q where φ() is a Ramanujan θ function. A112128

Expansion of 1/(1+x²-2·x³). A77912

Coefficients of q-expansion of Eisenstein series G_5/2(τ) multiplied by 120. A306934

Triangle of integers used to compute column sequences of array A078739 ((2,2)-Stirling2). A89511