388085988 has 12 divisors (see below), whose sum is σ = 905534000. Its totient is φ = 129361992.

The previous prime is 388085987. The next prime is 388086053. The reversal of 388085988 is 889580883.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×388085988² = 301221468163872288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388085987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16170238 + ... + 16170261.

Almost surely, 2^388085988 is an apocalyptic number.

It is an amenable number.

388085988 is an abundant number, since it is smaller than the sum of its proper divisors (517448012).

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

388085988 is a wasteful number, since it uses less digits than its factorization.

388085988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32340506 (or 32340504 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The square root of 388085988 is about 19699.8981723257. The cubic root of 388085988 is about 729.4171791446.

The spelling of 388085988 in words is "three hundred eighty-eight million, eighty-five thousand, nine hundred eighty-eight".