388752628 has 12 divisors (see below), whose sum is σ = 742164192. Its totient is φ = 176705720.

The previous prime is 388752607. The next prime is 388752629. The reversal of 388752628 is 826257883.

It is a happy number.

It is a super-2 number, since 2×388752628² = 302257211553812768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388752629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4417600 + ... + 4417687.

It is an arithmetic number, because the mean of its divisors is an integer number (61847016).

Almost surely, 2^388752628 is an apocalyptic number.

It is an amenable number.

388752628 is a deficient number, since it is larger than the sum of its proper divisors (353411564).

388752628 is a wasteful number, since it uses less digits than its factorization.

388752628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8835302 (or 8835300 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 388752628 is about 19716.8107968809. The cubic root of 388752628 is about 729.8345956647.

The spelling of 388752628 in words is "three hundred eighty-eight million, seven hundred fifty-two thousand, six hundred twenty-eight".