388942957828 has 24 divisors (see below), whose sum is σ = 704258755200. Its totient is φ = 187728797088.

The previous prime is 388942957817. The next prime is 388942957841. The reversal of 388942957828 is 828759249883.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271333 + ... + 922771.

It is an arithmetic number, because the mean of its divisors is an integer number (29344114800).

Almost surely, 2^388942957828 is an apocalyptic number.

It is an amenable number.

388942957828 is a deficient number, since it is larger than the sum of its proper divisors (315315797372).

388942957828 is a wasteful number, since it uses less digits than its factorization.

388942957828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656619 (or 656617 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 73.

The spelling of 388942957828 in words is "three hundred eighty-eight billion, nine hundred forty-two million, nine hundred fifty-seven thousand, eight hundred twenty-eight".