Properties of the Number 18792

Eighteen Thousand Seven Hundred Ninety-Two

Basics

Value: 18791 → 18792 → 18793

Parity: even

Prime: No

Previous Prime: 18787

Next Prime: 18793

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 29

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 100100101101000

Octal: 44550

Duodecimal: AA60

Hexadecimal: 4968

Square: 353139264

Square Root: 137.08391590555036

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

Number of polyominoes with n cells, symmetric about diagonal 2. A56878

Coefficients in expansion of (E₄³/E₆²)^1/16. A299951

a(n) = (2·n + 1)*(5·n + 1). A33571

T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6. A187317

Even heptagonal numbers (A000566). A14640

Composite numbers k such that σ(k)*(φ(k) + 2) is a square. A65655

Numbers of the form p⁴*q³*r where p, q, and r are distinct primes. A179698

Areas of nondegenerate triangles with perimeter A385737(n) whose side lengths are triangular numbers. A385872

Numbers k such that the powerful part of the sum of divisors of k (A387726) is greater than or equal to k, and σ(k) is not itself a powerful number. A387729

Number of 2 X 2 symmetric matrices over Z(n) having nonzero determinant. A115077