Properties of the Number 18392

Eighteen Thousand Three Hundred Ninety-Two

Basics

Value: 18391 → 18392 → 18393

Parity: even

Prime: No

Previous Prime: 18379

Next Prime: 18397

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 11 ² × 19

Divisors: 1, 2, 4, 8, 11, 19, 22, 38, 44, 76

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111011000

Octal: 43730

Duodecimal: A788

Hexadecimal: 47d8

Square: 338265664

Square Root: 135.6171080653175

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

Expansion of 1/(1 - x*∏_k>=1 (1 + x^k)). A299106

Coordination sequence for 4-dimensional cubic lattice (points on surface of 4-dimensional cross-polytope). A8412

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 3. A241648

a(n) = ∑_{k=0..floor(n/4)} C(n-2k,2k) * 3^k * 2^n-4k. A100133

Number of all polyhedra (tetrahedra of any orientation and octahedra) of any size, formed when intersecting a regular tetrahedron by planes parallel to its sides and dividing its edges into n equal parts. A216175

Square roots of A244506. A244507

E.g.f.: ∏_k>=1 (1 + x^k)^cos(x/k). A347899

Numbers that are values of the totient function (A002202) but not of the reduced totient function (A002174). A270265

∏_n>=1 (1 + xⁿ)^a(n) = g.f. of A001970 (partitions of partitions). A305841

Number of graph minors of the n-centipede graph. A352102