27687228 has 24 divisors (see below), whose sum is σ = 66832080. Its totient is φ = 8910720.

The previous prime is 27687197. The next prime is 27687299. The reversal of 27687228 is 82278672.

It is a self number, because there is not a number n which added to its sum of digits gives 27687228.

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, 39433 + ... + 40128.

It is an arithmetic number, because the mean of its divisors is an integer number (2784670).

Almost surely, 2^27687228 is an apocalyptic number.

It is an amenable number.

27687228 is an abundant number, since it is smaller than the sum of its proper divisors (39144852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27687228 is a wasteful number, since it uses less digits than its factorization.

27687228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79597 (or 79595 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 27687228 is about 5261.8654486788. The cubic root of 27687228 is about 302.5239941808.

The spelling of 27687228 in words is "twenty-seven million, six hundred eighty-seven thousand, two hundred twenty-eight".