389601728 has 28 divisors (see below), whose sum is σ = 787709880. Its totient is φ = 191123712.

The previous prime is 389601713. The next prime is 389601731. The reversal of 389601728 is 827106983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54038 + ... + 60821.

Almost surely, 2^389601728 is an apocalyptic number.

It is an amenable number.

389601728 is an abundant number, since it is smaller than the sum of its proper divisors (398108152).

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

389601728 is a wasteful number, since it uses less digits than its factorization.

389601728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114924 (or 114914 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 389601728 is about 19738.3314391060. The cubic root of 389601728 is about 730.3655690736.

The spelling of 389601728 in words is "three hundred eighty-nine million, six hundred one thousand, seven hundred twenty-eight".