27985790 has 32 divisors (see below), whose sum is σ = 57772224. Its totient is φ = 9561600.

The previous prime is 27985759. The next prime is 27985807. The reversal of 27985790 is 9758972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27572 + ... + 28568.

It is an arithmetic number, because the mean of its divisors is an integer number (1805382).

Almost surely, 2^27985790 is an apocalyptic number.

27985790 is an abundant number, since it is smaller than the sum of its proper divisors (29786434).

27985790 is a wasteful number, since it uses less digits than its factorization.

27985790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 27985790 is about 5290.1597329381. The cubic root of 27985790 is about 303.6075195318.

The spelling of 27985790 in words is "twenty-seven million, nine hundred eighty-five thousand, seven hundred ninety".