Properties of the Number -850

Eight Hundred Fifty

Basics

Value: -851 → -850 → -849

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 ² × 17

Divisors: 1, 2, 5, 10, 17, 25, 34, 50, 85, 170

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1101010010

Octal: -1522

Duodecimal: -5AA

Hexadecimal: -352

Square: 722500

Square Root: 29.154759474226502

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 η(q)⁵ * η(q³) * η(q⁶)⁴ / η(q²)⁴ in powers of q. A214262

a(n) = ∑_{d divides n} (-1)^{d + n/d} * d². A321558

Expansion of (9*φ(q)*φ(q³)⁵ - φ(q)⁵*φ(q³))/8 in powers of q where φ(q) is a Ramanujan θ function. A113261

Dirichlet inverse of A358764. A359427

Expansion of (1/3) * b(q) * b(q²) * c(q)² / c(q²) in powers of q where b(), c() are cubic AGM functions. A132000

Difference between sums of quadratic residues and non-residues modulo n that are coprime to n. A255643

Expansion of 1 / ∑_{k in Z} x^2·k / (1 - x^5·k+2). A375061

Triangle read by rows where row m is the m-th Gilbreath polynomial and column n is the numerator of the coefficient of the n-th degree term. A347924

a(n) = 2*σ(n) - σ(A003961(n)), where A003961 is fully multiplicative with a(prime(i)) = prime(i+1). A378752

Dirichlet convolution of A276086 (primorial base exp-function) with A055615 (Dirichlet inverse of n). A383286