328384221 has 16 divisors (see below), whose sum is σ = 479035200. Its totient is φ = 198443520.

The previous prime is 328384181. The next prime is 328384241. The reversal of 328384221 is 122483823.

It is not a de Polignac number, because 328384221 - 2⁹ = 328383709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328384241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740 + ... + 25773.

It is an arithmetic number, because the mean of its divisors is an integer number (29939700).

Almost surely, 2^328384221 is an apocalyptic number.

It is an amenable number.

328384221 is a deficient number, since it is larger than the sum of its proper divisors (150650979).

328384221 is a wasteful number, since it uses less digits than its factorization.

328384221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28876.

The product of its digits is 18432, while the sum is 33.

The square root of 328384221 is about 18121.3746995089. The cubic root of 328384221 is about 689.9126270379.

The spelling of 328384221 in words is "three hundred twenty-eight million, three hundred eighty-four thousand, two hundred twenty-one".