Properties of the Number -806400

Eight Hundred Six Thousand Four Hundred

Basics

Value: -806401 → -806400 → -806399

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁹ × 3 ² × 5 ² × 7

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11000100111000000000

Octal: -3047000

Duodecimal: -32A800

Hexadecimal: -c4e00

Square: 650280960000

Square Root: 897.997772825746

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

A triangle of coefficients from Hermite polynomials A060821 as {x,y},{y,z},{z,x} binomials reduced to x: f(x,y,n)=Sum[Coefficients(H(x,n))(i)*xⁱ*y^n-1,{i,0,n}]; p(x,y,z)=f(x,y,n)+f(y,z,n)+f(z,x,n). A139583

Number of adjacent pairs of form (even,odd) among all permutations of {1,2,...,n}. Also, number of adjacent pairs of form (odd,even). A77613

a(n) = n!*(n+3)! / 3!. A10792

Number of adjacent pairs of form (odd,odd) among all permutations of {1,2,...,n}. A77611

θ series of the coset of the E₇ lattice in its dual. A5931

Triangle T(n,k) of number of minimal 3-covers of a labeled n-set that cover k points of that set uniquely (k=3,..,n). A57964

Cyclic quadrilateral numbers: numbers m = a·b*c·d such that the integers a,b,c,d are the sides of a cyclic quadrilateral whose area and circumradius are integers. A218431

Triangle read by rows: T(n,i) = number of gracefully labeled graphs with n edges that do not use the label i, 1 <= i <= n-1, n > 1. A241094

a(n) = A000203(A255334(n)). A255412

The number of positive integer sequences of length n with no duplicate substrings (forward or backward) of length greater than 1 and a minimal product (= A282193(n)). A284435