Properties of the Number 18586

Eighteen Thousand Five Hundred Eighty-Six

Basics

Value: 18585 → 18586 → 18587

Parity: even

Prime: No

Previous Prime: 18583

Next Prime: 18587

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 9293

Divisors: 1, 2, 9293, 18586

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100010011010

Octal: 44232

Duodecimal: A90A

Hexadecimal: 489a

Square: 345439396

Square Root: 136.33048081775402

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

Numbers k such that k+1, k²+1 and k⁴+1 are primes. A70325

Number of partitions p of n such that the number of distinct parts is a part or max(p) - min(p) is a part. A241391

Number of paraffins. A5999

Numbers n such that h(n) = 3 h(n-1) where h(n) is the length of the sequence {n, f(n), f(f(n)), ...., 1} in the Collatz (or 3x + 1) problem. (The earliest "1" is meant.) A78420

a(n) = 15·n² + 6·n + 1. A80861

Tribonacci-like sequence a(n) = a(n-1) + a(n-2) + a(n-3) for n >= 3, with a(0) = 1, a(1) = 2, a(2) = 1. A275778

Number of partitions of [n] whose non-singleton elements sum to n. A370946

Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1s. A297598

Divisors of 675. A18586