27688028 has 6 divisors (see below), whose sum is σ = 48454056. Its totient is φ = 13844012.

The previous prime is 27688027. The next prime is 27688033. The reversal of 27688028 is 82088672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27688027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3461000 + ... + 3461007.

It is an arithmetic number, because the mean of its divisors is an integer number (8075676).

Almost surely, 2^27688028 is an apocalyptic number.

It is an amenable number.

27688028 is a deficient number, since it is larger than the sum of its proper divisors (20766028).

27688028 is a wasteful number, since it uses less digits than its factorization.

27688028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922011 (or 6922009 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 27688028 is about 5261.9414667972. The cubic root of 27688028 is about 302.5269078812.

The spelling of 27688028 in words is "twenty-seven million, six hundred eighty-eight thousand, twenty-eight".