Properties of the Number 18008

Eighteen Thousand Eight

Basics

Value: 18007 → 18008 → 18009

Parity: even

Prime: No

Previous Prime: 17989

Next Prime: 18013

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 2251

Divisors: 1, 2, 4, 8, 2251, 4502, 9004, 18008

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011001011000

Octal: 43130

Duodecimal: A508

Hexadecimal: 4658

Square: 324288064

Square Root: 134.19388957773003

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

Magnetic Tower of Hanoi, total number of moves, generated by a certain algorithm, yielding a "forward moving" non-optimal solution of the [NEUTRAL ; NEUTRAL ; NEUTRAL] pre-colored puzzle. A183125

Apply partial sum operator 4 times to primes. A178138

The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 0 to n, and each number in a higher row is the sum of the two numbers directly below it. A189390

Let (u1,u2) be successive untouchable numbers such that φ(u1) = φ(u2); sequence gives values of u2. A48190

a(n) = Least i in range [A165598(n),A165598(n+1)] for which abs(A165597(i)) gets the maximum value in that range. A165599

Number of partitions of n with difference -7 between the number of odd parts and the number of even parts, both counted without multiplicity. A242685

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 798", based on the 5-celled von Neumann neighborhood. A273571

n+p(n)+p(p(n)) is a palindrome, where p(n) denotes the n-th prime. A116037

Powers of cube root of 11 rounded up. A18008

E.g.f.: T(T(x)), where T(x) is the e.g.f. for labeled rooted trees, A000169. A207833