388072928 has 24 divisors (see below), whose sum is σ = 797238288. Its totient is φ = 185599744.

The previous prime is 388072907. The next prime is 388072931. The reversal of 388072928 is 829270883.

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, 262901 + ... + 264372.

It is an arithmetic number, because the mean of its divisors is an integer number (33218262).

Almost surely, 2^388072928 is an apocalyptic number.

It is an amenable number.

388072928 is an abundant number, since it is smaller than the sum of its proper divisors (409165360).

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

388072928 is a wasteful number, since it uses less digits than its factorization.

388072928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527306 (or 527298 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 388072928 is about 19699.5666957423. The cubic root of 388072928 is about 729.4089968555.

The spelling of 388072928 in words is "three hundred eighty-eight million, seventy-two thousand, nine hundred twenty-eight".