Properties of the Number 18430

Eighteen Thousand Four Hundred Thirty

Basics

Value: 18429 → 18430 → 18431

Parity: even

Prime: No

Previous Prime: 18427

Next Prime: 18433

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 19 × 97

Divisors: 1, 2, 5, 10, 19, 38, 95, 97, 190, 194

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111111110

Octal: 43776

Duodecimal: A7BA

Hexadecimal: 47fe

Square: 339664900

Square Root: 135.75713609236163

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

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

-2-Knödel numbers. A225506

a(n) = n*(16·n² + 3·n - 13)/6. A172078

a(n) = 9·2ⁿ - 2. A176449

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 621", based on the 5-celled von Neumann neighborhood. A283357

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 637", based on the 5-celled von Neumann neighborhood. A283406

Square array of numbers associated to the recurrences b(k) = b(k-1) + n·b(k-2); array T(n,k), read by descending antidiagonals, for n, k >= 0. A110112

Number of (w,x,y) with all terms in {0,...,n} and 2∣w-x| >= max(w,x,y)-min(w,x,y). A213388

Sequence associated to the recurrence b(n) = b(n-1) + 3·b(n-2). A110111

Triangle, T(n, k) = (1/2)*(n+2)! * [x^k]( p(x, n) ), where p(x,0) = 1, p(x,1) = -x, P(x, n) = (1/(n+1))*( (2·n-x)*P(x, n-1) - n·P(x, n-2) ), read by rows. A136532