388565928 has 48 divisors (see below), whose sum is σ = 1053304980. Its totient is φ = 129406464.

The previous prime is 388565921. The next prime is 388565939. The reversal of 388565928 is 829565883.

It can be written as a sum of positive squares in 2 ways, for example, as 373958244 + 14607684 = 19338^2 + 3822^2 .

It is not an unprimeable number, because it can be changed into a prime (388565921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126426 + ... + 129462.

Almost surely, 2^388565928 is an apocalyptic number.

It is an amenable number.

388565928 is an abundant number, since it is smaller than the sum of its proper divisors (664739052).

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

388565928 is a wasteful number, since it uses less digits than its factorization.

388565928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826 (or 4819 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 388565928 is about 19712.0756897897. The cubic root of 388565928 is about 729.7177416311.

The spelling of 388565928 in words is "three hundred eighty-eight million, five hundred sixty-five thousand, nine hundred twenty-eight".