Properties of the Number -827

Eight Hundred Twenty-Seven

Basics

Value: -828 → -827 → -826

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 827

Divisors: 1, 827

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100111011

Octal: -1473

Duodecimal: -58B

Hexadecimal: -33b

Square: 683929

Square Root: 28.75760768909681

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

a(n) = -n² + 9·n + 23. A126719

Expansion of g.f. A(x) = ∑_n=-oo..+oo xⁿ * (i + xⁿ)^2·n, where i² = -1. A363569

G.f. A(x) defined by: A(x)³ consists entirely of integer coefficients between 1 and 3 (A083953); A(x) is the unique power series solution with A(0)=1. A84203

E.g.f. satisfies A(x) = exp(x / A(-x)³). A360990

Numerators of Van der Pol numbers. A3164

Numerators of coefficients in Taylor series expansion of arccosh(exp(x)-sin(x)). A13305

G.f. A(x) satisfies: A(x)² equals the g.f. of A110637, which consists entirely of numbers 1 through 8. A112571

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 397", based on the 5-celled von Neumann neighborhood. A271692

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 425", based on the 5-celled von Neumann neighborhood. A272092

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 485", based on the 5-celled von Neumann neighborhood. A272505