Properties of the Number 18285

Eighteen Thousand Two Hundred Eighty-Five

Basics

Value: 18284 → 18285 → 18286

Parity: odd

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 23 × 53

Divisors: 1, 3, 5, 15, 23, 53, 69, 115, 159, 265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101101101

Octal: 43555

Duodecimal: A6B9

Hexadecimal: 476d

Square: 334341225

Square Root: 135.22203962372407

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

a(n) = n*(n+1)*(n+8)/6. A6503

Triangle read by rows: T(n,k) is the number of oriented colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns. A325008

Numbers such that the digital sums in bases 2, 3, 5 and 7 all are equal. A135127

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(k·x)*(sec(x) + tan(x)). A292975

Row sums in A100781. A100784

The function W_n(6) (see Borwein et al. reference for definition). A169711

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 454", based on the 5-celled von Neumann neighborhood. A282307

Number of partitions of n such that m(1) = m(3), where m = multiplicity. A240058

Number of integer partitions of 2n such that 2*(minimum) = (mean). A363132

Denominators of continued fraction convergents to sqrt(944). A42827