Search a number
BaseRepresentation
bin100011101101110
3221002021
410131232
51041121
6220354
7104212
oct43556
927067
1018286
1112814
12a6ba
138428
146942
155641
hex476e

18286 has 8 divisors (see below), whose sum is σ = 28224. Its totient is φ = 8880.

The previous prime is 18269. The next prime is 18287. The reversal of 18286 is 68281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30 + ... + 193.

It is an arithmetic number, because the mean of its divisors is an integer number (3528).

218286 is an apocalyptic number.

18286 is a deficient number, since it is larger than the sum of its proper divisors (9938).

18286 is a wasteful number, since it uses less digits than its factorization.

18286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its digits is 768, while the sum is 25.

The square root of 18286 is about 135.2257371953. The cubic root of 18286 is about 26.3454874550.

The spelling of 18286 in words is "eighteen thousand, two hundred eighty-six".

Divisors: 1 2 41 82 223 446 9143 18286