Properties of the Number -18628

Eighteen Thousand Six Hundred Twenty-Eight

Basics

Value: -18629 → -18628 → -18627

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 4657

Divisors: 1, 2, 4, 4657, 9314, 18628

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100100011000100

Octal: -44304

Duodecimal: -A944

Hexadecimal: -48c4

Square: 347002384

Square Root: 136.48443134658254

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

Table, read by rows, of coefficients of characteristic polynomials of almost prime matrices. A131175

Number of deterministic completely defined initially connected acyclic automata with 2 inputs and n transient unlabeled states (and a unique absorbing state). A82161

Triangular matrix, read by rows, that satisfies: T(n,k) = [T²](n-1,k) when n>k>=0, with T(n,n) = (n+1). A102086

Triangle, read by rows, where T(n,k) = T(n,k-1) + (k+1)*T(n-1,k) for n>k>0, T(n,0)=1 and T(n,n) = T(n,n-1) for n>=0. A102316

Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1). A137689

Expansion of (1 + x) / ((1 - x⁴) * (1 - x - x⁵)) in powers of x. A247907

Number of ways of partitioning the set of the first n positive squares into two subsets whose sums differ at most by 1. A307877

Triangle, read by rows, where T(n,k) = T(n,k-1) + n·T(n-1,k-1) for n>0 and k>0, with T(n,0) = T(n-1,n-1) for n>0 and T(0,0) = 1. A132007

Number of solutions to +-1² +- 2² +- 3² +- ... +- n² = 0 or 1. A350403

Number of solutions to +- 1² +- 2² +- 3² +- ... +- n² = 1. A369730