3328728 has 64 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 998016.

The previous prime is 3328723. The next prime is 3328729. The reversal of 3328728 is 8278233.

It is a happy number.

3328728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3328728² = 22160860195968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3328723) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14551 + ... + 14777.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

Almost surely, 2^3328728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3328728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596480).

3328728 is an abundant number, since it is smaller than the sum of its proper divisors (5864232).

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

3328728 is a wasteful number, since it uses less digits than its factorization.

3328728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 292 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 3328728 is about 1824.4801999474. The cubic root of 3328728 is about 149.3113319699.

The spelling of 3328728 in words is "three million, three hundred twenty-eight thousand, seven hundred twenty-eight".