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Properties of the Number 12618

Twelve Thousand Six Hundred Eighteen

Basics

Value: 12617 → 12618 → 12619

Parity: even

Prime: No

Previous Prime: 12613

Next Prime: 12619

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 2 × 701

Divisors: 1, 2, 3, 6, 9, 18, 701, 1402, 2103, 4206

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11000101001010

Octal: 30512

Duodecimal: 7376

Hexadecimal: 314a

Square: 159213924

Square Root: 112.32987136109433

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

Multiples of 18 containing a 18 in their decimal representation. A121038
Number of distinct perforation patterns for deriving (v,b) = (n+2,n) punctured convolutional codes from (2,1). A7223
Number of partitions of n such that (least part) <= (multiplicity of greatest part). A240179
Triangle read by rows: T(n,k) = number of ways to insert n pairs of parentheses in k words. A275431
Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 30", based on the 5-celled von Neumann neighborhood. A274476
Number of pairs of Dyck paths of semilength n such that the midpoint of the first is not below the midpoint of the second. A357652
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
a(n) = ∑k=0..n binomial(k+2,2) * binomial(k,3·n-3·k). A392313
Numbers k such that d(k) + d(k+1) + d(k+2) = 8, where d(k) = A001223. A64026
Ordered differences of central binomial coefficients. A205008