389128322 has 64 divisors (see below), whose sum is σ = 709171200. Its totient is φ = 158114880.

The previous prime is 389128321. The next prime is 389128331. The reversal of 389128322 is 223821983.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (389128321) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 569393 + ... + 570075.

It is an arithmetic number, because the mean of its divisors is an integer number (11080800).

Almost surely, 2^389128322 is an apocalyptic number.

389128322 is a deficient number, since it is larger than the sum of its proper divisors (320042878).

389128322 is a wasteful number, since it uses less digits than its factorization.

389128322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its digits is 41472, while the sum is 38.

The square root of 389128322 is about 19726.3357469146. The cubic root of 389128322 is about 730.0696261856.

The spelling of 389128322 in words is "three hundred eighty-nine million, one hundred twenty-eight thousand, three hundred twenty-two".