Properties of the Number -2080

Eighty

Basics

Value: -2081 → -2080 → -2079

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 5 × 13

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 20, 26

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100000100000

Octal: -4040

Duodecimal: -1254

Hexadecimal: -820

Square: 4326400

Square Root: 45.60701700396552

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

Inverse binomial transform of A005614, the rabbit sequence: (1, 0, 1, 1, 0, ...). A124841

Inverse Euler transform of the Moebius function A008683. A320781

Triangle, read by rows, equal to the matrix inverse of P=A113370. A114156

Expansion of log(1+tan(x)*x). A9379

∏_n>=1 (1 + a(n)*xⁿ) = 1 + ∑_n>=1 μ(n)*xⁿ, where μ = A008683. A353926

∏_n>=1 1 / (1 - a(n)*xⁿ) = 1 + ∑_n>=1 μ(n)*xⁿ, where μ = A008683. A353949

McKay-Thompson series of class 16f for the Monster group. A112153

McKay-Thompson series of class 16h for the Monster group. A112155

Triangular array, see Mathematica code. A122773

Expansion of ((b(q)*c(q))³ - 8*(b(q²)*c(q²))³) / 27 in powers of q where b(), c() are cubic AGM θ functions. A128486