27138028 has 24 divisors (see below), whose sum is σ = 48339200. Its totient is φ = 13329360.

The previous prime is 27137977. The next prime is 27138029. The reversal of 27138028 is 82083172.

It is not an unprimeable number, because it can be changed into a prime (27138029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81823 + ... + 82153.

Almost surely, 2^27138028 is an apocalyptic number.

It is an amenable number.

27138028 is a deficient number, since it is larger than the sum of its proper divisors (21201172).

27138028 is a wasteful number, since it uses less digits than its factorization.

27138028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 27138028 is about 5209.4172418803. The cubic root of 27138028 is about 300.5103461452.

The spelling of 27138028 in words is "twenty-seven million, one hundred thirty-eight thousand, twenty-eight".