Properties of the Number -11808

Eleven Thousand Eight Hundred Eight

Basics

Value: -11809 → -11808 → -11807

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁵ × 3 ² × 41

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10111000100000

Octal: -27040

Duodecimal: -6A00

Hexadecimal: -2e20

Square: 139428864

Square Root: 108.664621657649

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

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

Multiples of 18 containing a 18 in their decimal representation. A121038

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..2 introduced in row major order. A205626

Numbers k such that σ (x) = k has exactly 11 solutions. A60678

Number of 5-bead necklaces of n colors not allowing reversal, with no adjacent beads having the same color. A208536

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of equal 2X2 subblock diagonal pairs and equal antidiagonal pairs differing from each horizontal or vertical neighbor, and new values 0..2 introduced in row major order. A205335

T(n,k)=4-loop graph coloring a rectangular array: number of nXk 0..8 arrays where 0..8 label nodes of a graph with edges 0,1 1,2 2,0 0,3 3,4 4,0 0,5 5,6 6,0 0,7 7,8 8,0 and every array movement to a horizontal or vertical neighbor moves along an edge of this graph. A223297

Numbers m such that the smallest digit in the decimal expansion of 1/m is 3, ignoring leading and trailing 0's. A352157

Number of nonsingular n X n (-1,0,1)-matrices (over the reals). A56989

Numbers p⁵*q²*r where p, q, r are 3 distinct primes. A179691