Properties of the Number -1028

Twenty-Eight

Basics

Value: -1029 → -1028 → -1027

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 257

Divisors: 1, 2, 4, 257, 514, 1028

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000000100

Octal: -2004

Duodecimal: -718

Hexadecimal: -404

Square: 1056784

Square Root: 32.0624390837628

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

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * ∑_{j=0..floor(n/2)} (-k/2)^j * binomial(n-j,j)/(n-j)!. A362277

Expansion of ∏_k>=1 (1 + x^k/(1 + x)^k). A320591

Expansion of χ(-q) * χ(-q¹⁵) / (χ(-q⁶) * χ(-q¹⁰)) in powers of q where χ() is a Ramanujan θ function. A132968

McKay-Thompson series of class 15B for Monster. A58509

McKay-Thompson series of class 24f for the Monster group with a(0) = -2. A93067

Expansion of e.g.f. exp(-1 + cos(x) + sin(x)). A352145

Expansion of e.g.f. exp(x - 3·x²/2). A362278

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood. A270468

Values z of primitive solutions (x, y, z) to the Diophantine equation x³ + y³ + 2·z³ = 2·5⁶. A336450

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A385015. A385019