328353221 has 8 divisors (see below), whose sum is σ = 391576704. Its totient is φ = 269208720.

The previous prime is 328353211. The next prime is 328353227. The reversal of 328353221 is 122353823.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328353221 - 2¹⁰ = 328352197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328353227) 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, 1019570 + ... + 1019891.

It is an arithmetic number, because the mean of its divisors is an integer number (48947088).

Almost surely, 2^328353221 is an apocalyptic number.

It is an amenable number.

328353221 is a deficient number, since it is larger than the sum of its proper divisors (63223483).

328353221 is a wasteful number, since it uses less digits than its factorization.

328353221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039491.

The product of its digits is 8640, while the sum is 29.

The square root of 328353221 is about 18120.5193358248. The cubic root of 328353221 is about 689.8909167332.

The spelling of 328353221 in words is "three hundred twenty-eight million, three hundred fifty-three thousand, two hundred twenty-one".