Properties of the Number -18330

Eighteen Thousand Three Hundred Thirty

Basics

Value: -18331 → -18330 → -18329

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 13 × 47

Divisors: 1, 2, 3, 5, 6, 10, 13, 15, 26, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011110011010

Octal: -43632

Duodecimal: -A736

Hexadecimal: -479a

Square: 335988900

Square Root: 135.3883303686104

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

Matula-Goebel numbers of transitive rooted identity trees (or transitive finitary sets). A290760

Expansion of ∏_k>=1 (1 - x^10·k)/(1 - x^k). A261776

Numbers k such that σ(k) = σ(k+6). A15866

Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=9. A135194

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically. A207949

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements. A251028

Numbers whose sum of the squares of divisors is also a square number. A46655

a(n) is the number of terms in the expansion of (x+y+z)*(x²+y²+z²)*(x³+y³+z³)*...*(xⁿ+yⁿ+zⁿ). A86796

Antidiagonal sums of the convolution array A213822. A213824

a(n) = 27·n² - 51·n + 24, n>=1. A304836