Properties of the Number -3808

Eight Hundred Eight

Basics

Value: -3809 → -3808 → -3807

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 7 × 17

Divisors: 1, 2, 4, 7, 8, 14, 16, 17, 28, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111011100000

Octal: -7340

Duodecimal: -2254

Hexadecimal: -ee0

Square: 14500864

Square Root: 61.70899448216605

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

Glaisher's chi₄(n). A30212

Eighth convolution of A115140. A115147

Irregular triangle read by rows: T(n, k) = coefficients of f(n, x), where f(n, x) = (1-x)^2·n+2 * ∑_{k >=0} (kⁿ * x^k). A141581

Irregular triangle T(n, k) = ((-1)^k+1/2)*∑_j=0..n-2·k binomial(n+2, j)*binomial(n+2, j+k+1)* binomial(n+2, j+2·k+2), read by rows. A158193

E.g.f.: log(sec(x)+arcsinh(x)) = x-2/3!*x³+12/4!*x⁴-32/5!*x⁵+72/6!*x⁶... A13198

Expansion of -x*(2·x - 1)*(2·x² - 1)*(x³ + 2·x² - x - 1)/((x - 1)*(x² + x - 1)*(x⁴ - 4·x³ - 4·x² + x + 1)). A122605

Triangle formed from odd-numbered columns of triangle of expansions of powers of·in terms of Chebyshev polynomials U_n(x). Sometimes called Catalan's triangle. A39598

12-gonal (or dodecagonal) numbers: a(n) = n*(5·n-4). A51624

Generalized 27-gonal (or icosiheptagonal) numbers: m*(25·m - 23)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A316725

a(n) = 8·binomial(2·n+1,n-3)/(n+5). A3518