388321066 has 16 divisors (see below), whose sum is σ = 687168000. Its totient is φ = 161054640.

The previous prime is 388321057. The next prime is 388321093. The reversal of 388321066 is 660123883.

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, 446941 + ... + 447808.

It is an arithmetic number, because the mean of its divisors is an integer number (42948000).

Almost surely, 2^388321066 is an apocalyptic number.

388321066 is a deficient number, since it is larger than the sum of its proper divisors (298846934).

388321066 is a wasteful number, since it uses less digits than its factorization.

388321066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894789.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 388321066 is about 19705.8637466111. The cubic root of 388321066 is about 729.5644277155.

The spelling of 388321066 in words is "three hundred eighty-eight million, three hundred twenty-one thousand, sixty-six".