Properties of the Number -442827

Four Hundred Forty-Two Thousand Eight Hundred Twenty-Seven

Basics

Value: -442828 → -442827 → -442826

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 7 × 11 × 71

Divisors: 1, 3, 7, 9, 11, 21, 27, 33, 63, 71

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101100000111001011

Octal: -1540713

Duodecimal: -194323

Hexadecimal: -6c1cb

Square: 196095751929

Square Root: 665.4524776420927

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

E.g.f.: sqrt(2)*(L/π) / (1 + 2*∑_n>=1 cosh(2*π*n·x/L)/cosh(n*π)) where L = Lemniscate constant. A193544

E.g.f.: sqrt(2)*L / (π*(1 + 2*∑_n>=1 cos(2*π*n·x/L)/cosh(n*π) )) where L = Lemniscate constant. A193541

E.g.f. S(x) satisfies: S(x) = Integral [1 - 2·S(x)²]^3/4 dx with S(0)=0. A159601

a(n) = ∑_k=0..n-1 cos(π*k/2)*binomial(n-1,k)*a(n-1-k)*a(k) for n > 0, a(0) = 1. A190904

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of continued fraction 1/(1 + x/(1 - 2^k*x/(1 + 3^k*x/(1 - 4^k*x/(1 + 5^k*x/(1 - ...)))))). A291207

E.g.f. C(x) satisfies: C(x) = (1 - 2·S(x)²)^1/4, where S'(x) = C(x)³ and C'(x) = -S(x) with C(0)=1. A159600

a(n) = coefficient of x^2·n/(2·n)! in exp( integral ( sn(x, 1/2) / cd(x, 1/2) ) dx). A286306