328639520 has 48 divisors (see below), whose sum is σ = 846998208. Its totient is φ = 119504640.

The previous prime is 328639517. The next prime is 328639541. The reversal of 328639520 is 25936823.

328639520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 91604 + ... + 95123.

It is an arithmetic number, because the mean of its divisors is an integer number (17645796).

Almost surely, 2^328639520 is an apocalyptic number.

It is an amenable number.

328639520 is an abundant number, since it is smaller than the sum of its proper divisors (518358688).

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

328639520 is a wasteful number, since it uses less digits than its factorization.

328639520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186753 (or 186745 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 328639520 is about 18128.4174709212. The cubic root of 328639520 is about 690.0913692629.

The spelling of 328639520 in words is "three hundred twenty-eight million, six hundred thirty-nine thousand, five hundred twenty".