Properties of the Number 18027

Eighteen Thousand Twenty-Seven

Basics

Value: 18026 → 18027 → 18028

Parity: odd

Prime: No

Previous Prime: 18013

Next Prime: 18041

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 2003

Divisors: 1, 3, 9, 2003, 6009, 18027

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011001101011

Octal: 43153

Duodecimal: A523

Hexadecimal: 466b

Square: 324972729

Square Root: 134.2646640036015

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

Coordination sequence for (2,6,infinity) tiling of hyperbolic plane. A265070

Numbers k such that k and 4·k are anagrams. A23088

T(n,k) = Number of (n+1) X (k+1) 0..2 arrays x(i,j) with row sums ∑_j=1..k+1 x(i,j) nondecreasing, and column sums ∑_i=1..n+1 i·x(i,j) nondecreasing. A233117

Numbers n such that n, n+1, n+2 are all of the form p·q² for distinct primes p,q. A178032

Numbers·whose digits can be permuted to produce a multiple of x. A245680

Starts of runs of 3 consecutive numbers that have an equal number of even and odd exponents in their prime factorization (A187039). A348077

Denominators of continued fraction convergents to sqrt(883). A42707

a(n) = 729·n - 198. A156772

10ⁿ + a(n) is the least (n+1)-digit prime member of a prime 5-tuple, or a(n) = 0 if no such number exists. A343635

Starts of runs of 3 consecutive numbers that have an equal number of unitary and nonunitary prime divisors (A348097). A348099