Properties of the Number -18588

Eighteen Thousand Five Hundred Eighty-Eight

Basics

Value: -18589 → -18588 → -18587

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 1549

Divisors: 1, 2, 3, 4, 6, 12, 1549, 3098, 4647, 6196

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -100100010011100

Octal: -44234

Duodecimal: -A910

Hexadecimal: -489c

Square: 345513744

Square Root: 136.3378157372341

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

Initial members of abundant quadruplets, i.e., values of k such that (k, k+2, k+4, k+6) are all abundant numbers. A231089

T(n,k)=Number of nXk 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero. A230513

Convolution of A008619 and A001400. A139672

Number of triangles in a Star of David of size n. A299965

The number of partitions of n into parts, so that there exists a part i with multiplicity i. A392745

Row sums up to the main diagonal of the "postage stamp" array (n,m >= 0) defined in A007059. A39671

Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x. A48131

The maximum integer dimension in which the volume of the hypersphere of radius n remains larger than 1. A177677

Number of nX3 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero. A230510

Number of (n+1) X (5+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A253432