27157990 has 16 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 10598080.

The previous prime is 27157987. The next prime is 27158029. The reversal of 27157990 is 9975172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32710 + ... + 33529.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^27157990 is an apocalyptic number.

27157990 is a deficient number, since it is larger than the sum of its proper divisors (22919450).

27157990 is a wasteful number, since it uses less digits than its factorization.

27157990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66287.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 27157990 is about 5211.3328429491. The cubic root of 27157990 is about 300.5840105161.

The spelling of 27157990 in words is "twenty-seven million, one hundred fifty-seven thousand, nine hundred ninety".