27385864 has 16 divisors (see below), whose sum is σ = 56016720. Its totient is φ = 12448080.

The previous prime is 27385837. The next prime is 27385873. The reversal of 27385864 is 46858372.

It is a self number, because there is not a number n which added to its sum of digits gives 27385864.

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, 155514 + ... + 155689.

It is an arithmetic number, because the mean of its divisors is an integer number (3501045).

Almost surely, 2^27385864 is an apocalyptic number.

It is an amenable number.

27385864 is an abundant number, since it is smaller than the sum of its proper divisors (28630856).

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

27385864 is a wasteful number, since it uses less digits than its factorization.

27385864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311220 (or 311216 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 27385864 is about 5233.1504851284. The cubic root of 27385864 is about 301.4223714660.

The spelling of 27385864 in words is "twenty-seven million, three hundred eighty-five thousand, eight hundred sixty-four".