Properties of the Number 18054

Eighteen Thousand Fifty-Four

Basics

Value: 18053 → 18054 → 18055

Parity: even

Prime: No

Previous Prime: 18049

Next Prime: 18059

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 17 × 59

Divisors: 1, 2, 3, 6, 9, 17, 18, 34, 51, 59

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010000110

Octal: 43206

Duodecimal: A546

Hexadecimal: 4686

Square: 325946916

Square Root: 134.36517405935214

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

Apply partial sum operator thrice to primes. A14150

T(n,k)=Number of nXnXn triangular 0..k arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all equal. A271339

G.f. satisfies A(x) = 1 + x·A(x) + x⁵*A(x)⁵. A364522

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 8/5. A279780

Numbers k such that prime(k+3)-(k+3)*τ(k+3) = prime(k-3)-(k-3)*τ(k-3) where τ(k) = A000005(k) is the number of divisors of k. A67355

Triangle read by rows, based on a simple Fibonacci recursion rule. A111669

a(n) = [xⁿ] ∏_k=1..n (1 - x^k)^n-k+1. A303173

Coefficients in the expansion of 1/([r]-[2r]x+[3r]x²-...); [ ]=floor, r=8/5. A289260

Number of similarity classes of triangles which can be drawn using the lattice points in an n X n grid for vertices. A28492

Number of hybrid 8-ary trees with n internal nodes. A245051