Properties of the Number 18039

Eighteen Thousand Thirty-Nine

Basics

Value: 18038 → 18039 → 18040

Parity: odd

Prime: No

Previous Prime: 18013

Next Prime: 18041

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 859

Divisors: 1, 3, 7, 21, 859, 2577, 6013, 18039

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011001110111

Octal: 43167

Duodecimal: A533

Hexadecimal: 4677

Square: 325405521

Square Root: 134.30934442547175

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

Smallest k such that the k-th composition in standard order has n distinct runs. A351015

Number of distinct values of multinomial coefficients ( n / (p1, p2, p3, ...) ) where (p1, p2, p3, ...) runs over all partitions of n. A70289

Sum over all partitions of n of the number of distinct parts i of multiplicity i. A276428

G.f. satisfies: A(x) = 1 + x*∑_n>=0 (A(x)³ - 1)ⁿ. A192946

Cyclops numbers whose squares are cyclops numbers. A239827

a(n) = floor(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n). A134791

a(n) = round(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n). A134792

Number of solutions to a+b+c < d+e with each of a,b,c,d,e in {1..n+1}. A179441

Numbers k such that 71·2^k+1 is prime. A32385

Numbers k such that k, k² and k³ are cyclops numbers (A134808). A286662