Properties of the Number 18894

Eighteen Thousand Eight Hundred Ninety-Four

Basics

Value: 18893 → 18894 → 18895

Parity: even

Prime: No

Previous Prime: 18869

Next Prime: 18899

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 47 × 67

Divisors: 1, 2, 3, 6, 47, 67, 94, 134, 141, 201

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100111001110

Octal: 44716

Duodecimal: AB26

Hexadecimal: 49ce

Square: 356983236

Square Root: 137.45544732748863

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 nonempty subsets of {1..n} whose product is divisible by their sum. A326156

Number of partitions of n where the difference between consecutive parts is at most 3. A238863

Difference between the product of two consecutive primes and the next prime. A111071

Expansion of b(q²) * c(q²) / (3·b(q)²) in powers of q where b(), c() are cubic AGM functions. A233698

a(n) is the surface area of the symmetric tower described in A221529 which is a polycube whose successive terraces are the symmetric representation of σ A000203(i) (from i = 1 to n) starting from the top and the levels of these terraces are the partition numbers A000041(h-1) (from h = 1 to n) starting from the base. A345023

Expansion of ( f(-q²) * f(q³) * f(-q⁶) / f(q)³ )² in powers of q where f() is a Ramanujan θ function. A164271

The number of overpartitions of n with restricted odd differences. A260890

Expansion of ψ(x) * f(-x¹⁸)³ / (φ(-x³) * f(-x³)³) in powers of·where φ(), ψ(), f() are Ramanujan θ functions. A261992

Dirichlet g.f.: ζ(s)² * ζ(s-2)². A328490

Indices of primes in sequence defined by A(0) = 79, A(n) = 10·A(n-1) - 21 for n > 0. A101150