27628664 has 16 divisors (see below), whose sum is σ = 59204400. Its totient is φ = 11840832.

The previous prime is 27628649. The next prime is 27628693. The reversal of 27628664 is 46682672.

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, 246629 + ... + 246740.

It is an arithmetic number, because the mean of its divisors is an integer number (3700275).

Almost surely, 2^27628664 is an apocalyptic number.

It is an amenable number.

27628664 is an abundant number, since it is smaller than the sum of its proper divisors (31575736).

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

27628664 is a wasteful number, since it uses less digits than its factorization.

27628664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493382 (or 493378 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 27628664 is about 5256.2975562652. The cubic root of 27628664 is about 302.3105441192.

The spelling of 27628664 in words is "twenty-seven million, six hundred twenty-eight thousand, six hundred sixty-four".