Properties of the Number 18627

Eighteen Thousand Six Hundred Twenty-Seven

Basics

Value: 18626 → 18627 → 18628

Parity: odd

Prime: No

Previous Prime: 18617

Next Prime: 18637

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 887

Divisors: 1, 3, 7, 21, 887, 2661, 6209, 18627

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100011000011

Octal: 44303

Duodecimal: A943

Hexadecimal: 48c3

Square: 346965129

Square Root: 136.48076787591722

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

Interprimes (A024675) which are of the form s·prime, s=21. A75296

Number of integer partitions of n that cannot be partitioned into a set (or multiset) of sets with distinct sums. A381990

Number of partitions of n that do not contain 10 as a part. A27344

Least increasing sequence with a(1) = 1 and Hankel transform {1,1,1,1,...}. A55877

Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1). A137689

G.f. A(x) satisfies: A(x) = 1 + x² + x³ * A(x/(1 - x)) / (1 - x). A346051

Expansion of (1/x) * Series_Reversion( x*(1+x+x³)/(1+x)² ). A366116

Let π be an unrestricted partition of n with the summands written as binary numbers; a(n) is the number of such partitions with an even number of binary ones. A102425

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 593", based on the 5-celled von Neumann neighborhood. A273121

Numbers k such that k!4 + 2⁶ is prime, where k!4 = k!!!! is the quadruple factorial number (A007662). A291347