Properties of the Number -18306

Eighteen Thousand Three Hundred Six

Basics

Value: -18307 → -18306 → -18305

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 113

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 81, 113

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011110000010

Octal: -43602

Duodecimal: -A716

Hexadecimal: -4782

Square: 335109636

Square Root: 135.29966740535616

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

Number of labeled graphs with 2-colored nodes where black nodes are only connected to white nodes and vice versa. A47863

Square array A(n,k) = (n!)² [xⁿ] BesselI(0, 2·sqrt(x))^k read by antidiagonals. A287316

Array read by antidiagonals: T(n,k) is the number of graphs on n labeled nodes, each node being colored with one of k colors, where no edge connects two nodes of the same color. A322280

Number of anisohedral polyominoes with n cells. A75206

The function W₆(2n) (see Borwein et al. reference for definition). A169715

Expansion of ∏_k>=1 1/(1-x^k)^k*(k-1*(k-2)). A258351

Array read by antidiagonals: T(n,k) = n! * ∑_s 2^{∑_i=1..k-1 s(i}*s(i+1))/(∏_i=1..k s(i)!) where the sum is over all nonnegative compositions s of n into k parts. A361950

The function W_n(8) (see Borwein et al. reference for definition). A169712

4-step Fibonacci sequence starting with 0, 1, 1, 0. A251654

Growth function of an infinite cubic graph (number of nodes at distance <=n from fixed node). A38621