27864628 has 12 divisors (see below), whose sum is σ = 53196192. Its totient is φ = 12665720.

The previous prime is 27864607. The next prime is 27864631. The reversal of 27864628 is 82646872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316600 + ... + 316687.

It is an arithmetic number, because the mean of its divisors is an integer number (4433016).

Almost surely, 2^27864628 is an apocalyptic number.

It is an amenable number.

27864628 is a deficient number, since it is larger than the sum of its proper divisors (25331564).

27864628 is a wasteful number, since it uses less digits than its factorization.

27864628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633302 (or 633300 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 27864628 is about 5278.6956722281. The cubic root of 27864628 is about 303.1687384082.

The spelling of 27864628 in words is "twenty-seven million, eight hundred sixty-four thousand, six hundred twenty-eight".