Properties of the Number -858

Eight Hundred Fifty-Eight

Basics

Value: -859 → -858 → -857

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: Yes

Factorization: 2 × 3 × 11 × 13

Divisors: 1, 2, 3, 6, 11, 13, 22, 26, 33, 39

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1101011010

Octal: -1532

Duodecimal: -5B6

Hexadecimal: -35a

Square: 736164

Square Root: 29.29163703175362

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

Expansion of sqrt(1 - 4·x) in powers of x. A2420

G.f.: ∏_k>0 (1-x^2k-1)/(1-x^2k). A106507

1 + ∑_n>=1 a_n xⁿ = ∏_n>=1 (1-xⁿ)^prime(n). A7441

Expansion of exp( arcsinh( 2·x ) ). A182122

Expansion of (1-4·x)^13/2. A20925

G.f. A(x) satisfies: A(x) = A(x⁴ - x⁶)/x³. A350483

Expansion of exp( arcsinh( -2·x ) ) in powers of x. A104624

Array for second (k=2) convolution of Chebyshev's S(n,x)=U(n,x/2) polynomials. A128503

a(n) = A184879(2·n, n) - A184879(2·n, n+1) where A184879(n, k) = Hypergeometric2F1(-2·k, 2·k-2·n, 1, -1) if 0<=k<=n. A184881

G.f. A(x) satisfies: A(x) = 1 / (1 - x + x⁴ * A(x)). A349048