18542286 has 36 divisors (see below), whose sum is σ = 46736352. Its totient is φ = 5297544.

The previous prime is 18542273. The next prime is 18542297. The reversal of 18542286 is 68224581.

It is a self number, because there is not a number n which added to its sum of digits gives 18542286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9630 + ... + 11393.

It is an arithmetic number, because the mean of its divisors is an integer number (1298232).

Almost surely, 2^18542286 is an apocalyptic number.

18542286 is an abundant number, since it is smaller than the sum of its proper divisors (28194066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18542286 is a wasteful number, since it uses less digits than its factorization.

18542286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045 (or 21035 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 18542286 is about 4306.0754754184. The cubic root of 18542286 is about 264.6799791821.

The spelling of 18542286 in words is "eighteen million, five hundred forty-two thousand, two hundred eighty-six".