Properties of the Number 18366

Eighteen Thousand Three Hundred Sixty-Six

Basics

Value: 18365 → 18366 → 18367

Parity: even

Prime: No

Previous Prime: 18353

Next Prime: 18367

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 3061

Divisors: 1, 2, 3, 6, 3061, 6122, 9183, 18366

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011110111110

Octal: 43676

Duodecimal: A766

Hexadecimal: 47be

Square: 337309956

Square Root: 135.52121605121465

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

Triangle, read by rows, equal to the matrix inverse of Q=A113381. A114158

Numbers n such that 2·p(n)+3, 2·p(n+1)+3, 2·p(n+2)+3 are consecutive primes, where p(i) denotes the i-th prime. A88066

E.g.f. satisfies A(x) = 1 + x·A(x)² * (exp(x·A(x)²) - 1). A371270

T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nXk array. A220430

A triple of positive integers (n,p,k) is admissible if there exist at least two different multisets of k positive integers, {x₁,x₂,...,x_k} and {y₁,y₂,...,y_k}, such that x₁+x₂+...+x_k = y₁+y₂+...+y_k = n and x_1x_2...x_k = y_1y_2...y_k = p. For each n, let A(n) = {p:(n,p,k) is admissible for some k}, and let a(n) = |A(n)|. A316946

Equals two maps: number of nX3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nX3 array. A220428

Number of partitions of n into an even number of relatively prime parts. A339397

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 90. A31588

Primes of the form k² + k + 41. A5846

Primes of the form 2·k² + 29. A7641