Properties of the Number -320

Three Hundred Twenty

Basics

Value: -321 → -320 → -319

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ⁶ × 5

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000000

Octal: -500

Duodecimal: -228

Hexadecimal: -140

Square: 102400

Square Root: 17.88854381999832

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

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n as ∑_k=0..n T(n,k)*binomial(n,k). A244130

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(n,k)*binomial(n,k). A244138

Triangle read by rows: terms T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(n,k). A244139

Expansion of η(q)⁸ / η(q²)⁴ in powers of q. A96727

Expansion of ∏_k>=1 (1 - x^k)¹⁶. A739

Triangle, read by rows, equal to the matrix inverse of Q=A113381. A114158

Self-convolution 5th power equals A106222, which consists entirely of digits {0,1,2,3,4} after the initial terms {1,5}. A106223

a(n) = 2ⁿ*(1-n). A159964

Difference between n-th prime power and its arithmetic derivative. A192134

Expansion of χ(-x⁴)⁴ * f(-x⁴)² * f(-x)² in powers of·where χ(), f() are Ramanujan θ functions. A279955