Properties of the Number -488

Four Hundred Eighty-Eight

Basics

Value: -489 → -488 → -487

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 61

Divisors: 1, 2, 4, 8, 61, 122, 244, 488

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111101000

Octal: -750

Duodecimal: -348

Hexadecimal: -1e8

Square: 238144

Square Root: 22.090722034374522

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

Dirichlet inverse of sigma₂ function (A001157). A53822

a(n) = n - A243071(n). A364288

E.g.f. arctan(sec(x)*sinh(x)) (odd powers only). A12816

Expansion of E(k) * K(k) * (2/π)² in powers of q² where E(), K() are complete elliptic integrals and the nome q = exp( -π * K(k') / K(k)). A122858

McKay-Thompson series of class 22B for Monster. A58568

McKay-Thompson series of class 22B for the Monster group with a(0) = -2. A132320

Diagonal sums of the Riordan array (1-4·x+4·x², x*(1-2·x)) (A167431). A167434

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of A115255 (in square format); by antidiagonals. A203005

Triangle read by rows: row n gives coefficients of increasing powers of·in the polynomial (-1)ⁿ*p(n), where p(n) is defined as follows. Let f(n) = n*(n+1)/2, g(n) = f(n)+1; then p(-1) = 0, p(0) = 1 and for n >= 1, p(n) = (x - f(n))*p(n - 1) - g(n - 1)²*p(n - 2). A135049

Expansion of K(k) * (2·E(k) - K(k)) / (π/2)² in powers of q where E(k), K(k) are complete elliptic integrals and q = exp(-π * K(k') / K(k)). A143336