3221328 has 40 divisors (see below), whose sum is σ = 9079776. Its totient is φ = 976000.

The previous prime is 3221327. The next prime is 3221353. The reversal of 3221328 is 8231223.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2523 + ... + 3578.

Almost surely, 2^3221328 is an apocalyptic number.

It is an amenable number.

3221328 is an abundant number, since it is smaller than the sum of its proper divisors (5858448).

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

3221328 is a wasteful number, since it uses less digits than its factorization.

3221328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123 (or 6117 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 3221328 is about 1794.8058390812. The cubic root of 3221328 is about 147.6879228800.

The spelling of 3221328 in words is "three million, two hundred twenty-one thousand, three hundred twenty-eight".