27138727 has 18 divisors (see below), whose sum is σ = 34283144. Its totient is φ = 21028920.

The previous prime is 27138721. The next prime is 27138737. The reversal of 27138727 is 72783172.

It is not a de Polignac number, because 27138727 - 2¹⁵ = 27105959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27138721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 151524 + ... + 151702.

Almost surely, 2^27138727 is an apocalyptic number.

27138727 is a deficient number, since it is larger than the sum of its proper divisors (7144417).

27138727 is an equidigital number, since it uses as much as digits as its factorization.

27138727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 197 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 27138727 is about 5209.4843314862. The cubic root of 27138727 is about 300.5129262262.

The spelling of 27138727 in words is "twenty-seven million, one hundred thirty-eight thousand, seven hundred twenty-seven".