328643216 has 40 divisors (see below), whose sum is σ = 706428000. Its totient is φ = 146846720.

The previous prime is 328643207. The next prime is 328643219. The reversal of 328643216 is 612346823.

It is not an unprimeable number, because it can be changed into a prime (328643219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5441 + ... + 26208.

It is an arithmetic number, because the mean of its divisors is an integer number (17660700).

Almost surely, 2^328643216 is an apocalyptic number.

It is an amenable number.

328643216 is an abundant number, since it is smaller than the sum of its proper divisors (377784784).

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

328643216 is a wasteful number, since it uses less digits than its factorization.

328643216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31727 (or 31721 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 328643216 is about 18128.5194100346. The cubic root of 328643216 is about 690.0939562597.

The spelling of 328643216 in words is "three hundred twenty-eight million, six hundred forty-three thousand, two hundred sixteen".