385638928 has 20 divisors (see below), whose sum is σ = 750309120. Its totient is φ = 192010784.

The previous prime is 385638887. The next prime is 385638937. The reversal of 385638928 is 829836583.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 46600 + ... + 54247.

It is an arithmetic number, because the mean of its divisors is an integer number (37515456).

Almost surely, 2^385638928 is an apocalyptic number.

It is an amenable number.

385638928 is a deficient number, since it is larger than the sum of its proper divisors (364670192).

385638928 is a wasteful number, since it uses less digits than its factorization.

385638928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101094 (or 101088 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 385638928 is about 19637.6915140248. The cubic root of 385638928 is about 727.8808423097.

The spelling of 385638928 in words is "three hundred eighty-five million, six hundred thirty-eight thousand, nine hundred twenty-eight".