388666372 has 24 divisors (see below), whose sum is σ = 688764384. Its totient is φ = 191888832.

The previous prime is 388666363. The next prime is 388666387. The reversal of 388666372 is 273666883.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147208 + ... + 149824.

It is an arithmetic number, because the mean of its divisors is an integer number (28698516).

Almost surely, 2^388666372 is an apocalyptic number.

It is an amenable number.

388666372 is a deficient number, since it is larger than the sum of its proper divisors (300098012).

388666372 is a wasteful number, since it uses less digits than its factorization.

388666372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075 (or 3073 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 388666372 is about 19714.6233035278. The cubic root of 388666372 is about 729.7806133764.

The spelling of 388666372 in words is "three hundred eighty-eight million, six hundred sixty-six thousand, three hundred seventy-two".