Properties of the Number 18275

Eighteen Thousand Two Hundred Seventy-Five

Basics

Value: 18274 → 18275 → 18276

Parity: odd

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 17 × 43

Divisors: 1, 5, 17, 25, 43, 85, 215, 425, 731, 1075

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101100011

Octal: 43543

Duodecimal: A6AB

Hexadecimal: 4763

Square: 333975625

Square Root: 135.18505834595774

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

Number of vertices in a regular drawing of the complete bipartite graph K_n,n. A331755

Irregular array read by rows. a(n) is the largest element in the primitive Collatz-like 3x-k cycle associated with A226623(n). A226624

a(n) = n*(n+7)*(n+8)/6. A111396

dot_product(n,n-1,...2,1)*(6,7,...,n,1,2,3,4,5). A26063

G.f.: (1+x+x²-sqrt(1+2x+3x²-2x³+x⁴))/2. A129509

Expansion of ∏_k>=1 (∏_j=1..k 1/(1 - x^k·j)^k). A327067

Quadruples of different integers from [ 1,n ] with no common factors between pairs. A15623

Starts of runs of 3 consecutive integers whose exponent of least prime factor in their prime factorization is even. A365871

Primitive terms of A389634. A389635

G.f. A(x) satisfies: A(x) = x + x² + x³ + x⁴ + x⁵ * (1 + A(A(x))). A308032