388928168 has 8 divisors (see below), whose sum is σ = 729240330. Its totient is φ = 194464080.

The previous prime is 388928167. The next prime is 388928171. The reversal of 388928168 is 861829883.

It can be written as a sum of positive squares in only one way, i.e., 254785444 + 134142724 = 15962^2 + 11582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (388928161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24308003 + ... + 24308018.

Almost surely, 2^388928168 is an apocalyptic number.

It is an amenable number.

388928168 is a deficient number, since it is larger than the sum of its proper divisors (340312162).

388928168 is a wasteful number, since it uses less digits than its factorization.

388928168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48616027 (or 48616023 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 53.

The square root of 388928168 is about 19721.2618257555. The cubic root of 388928168 is about 729.9444306233.

The spelling of 388928168 in words is "three hundred eighty-eight million, nine hundred twenty-eight thousand, one hundred sixty-eight".