388258028 has 12 divisors (see below), whose sum is σ = 696023832. Its totient is φ = 189394080.

The previous prime is 388258021. The next prime is 388258063. The reversal of 388258028 is 820852883.

It is a self number, because there is not a number n which added to its sum of digits gives 388258028.

It is not an unprimeable number, because it can be changed into a prime (388258021) 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, 1183550 + ... + 1183877.

It is an arithmetic number, because the mean of its divisors is an integer number (58001986).

Almost surely, 2^388258028 is an apocalyptic number.

It is an amenable number.

388258028 is a deficient number, since it is larger than the sum of its proper divisors (307765804).

388258028 is a wasteful number, since it uses less digits than its factorization.

388258028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367472 (or 2367470 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 388258028 is about 19704.2642085413. The cubic root of 388258028 is about 729.5249476948.

The spelling of 388258028 in words is "three hundred eighty-eight million, two hundred fifty-eight thousand, twenty-eight".