Properties of the Number -256

Two Hundred Fifty-Six

Basics

Value: -257 → -256 → -255

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁸

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 256

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000000

Octal: -400

Duodecimal: -194

Hexadecimal: -100

Square: 65536

Square Root: 16

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 of coefficients of Chebyshev's T(n,x) polynomials (powers of·in increasing order). A53120

Expansion of e.g.f. cos(x) / exp(x). A9116

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 0^n-1 as Sum(k=0..n)T(n,k)*binomial(n,k). A244128

Triangle of coefficients of Chebyshev polynomials T_n(x). A8310

Coefficients of Chebyshev polynomials of the first kind: triangle of coefficients in expansion of cos(n·x) in descending powers of cos(x). A28297

a(2·n) = 2ⁿ; a(2·n+1) = -(2ⁿ⁺¹). A152166

Expansion of square root of q times normalized Hauptmodul for γ(4) in powers of q⁸. A29838

Expansion of q^-1/24 (m (1-m) / 16)^1/24 in powers of q, where m = k² is the parameter and q is the nome for Jacobian elliptic functions. A81360

Expansion of (1-x³)/((1-x)*(1+2·x²)). A117575

Triangle of coefficients of cos(x)ⁿ in polynomial for cos(nx). A39991