Properties of the Number 18086

Eighteen Thousand Eighty-Six

Basics

Value: 18085 → 18086 → 18087

Parity: even

Prime: No

Previous Prime: 18077

Next Prime: 18089

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 9043

Divisors: 1, 2, 9043, 18086

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011010100110

Octal: 43246

Duodecimal: A572

Hexadecimal: 46a6

Square: 327103396

Square Root: 134.484199815443

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

Array read by antidiagonals: T(n,k) = number of noncrossing path sets on k·n nodes up to rotation and reflection with each path having exactly k nodes. A302828

Number of noncrossing path sets on 4·n nodes up to rotation and reflection with each path having exactly 4 nodes. A303867

Cyclops numbers whose squares are cyclops numbers. A239827

Row sums of A325433. A325434

a(n) = prime(n)*prime(n+1) + prime(n+2). A292926

a(n) = ∑_k=0..n φ(k² + 1), where φ is the Euler totient function (A000010). A333170

Number of edge-weighted n-regular multigraphs on 2 unlabeled vertices with total edge weight n. A390166

Numbers k such that 175·2^k+1 is prime. A32464

Number of nondecreasing integer sequences of length 21 with sum zero and sum of absolute values 2n. A158155

Sum of the third largest parts of the partitions of 4n into 4 parts. A242727