28328344 has 32 divisors (see below), whose sum is σ = 58611600. Its totient is φ = 12728320.

The previous prime is 28328329. The next prime is 28328369. The reversal of 28328344 is 44382382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6024 + ... + 9640.

Almost surely, 2^28328344 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 28328344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29305800).

28328344 is an abundant number, since it is smaller than the sum of its proper divisors (30283256).

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

28328344 is a wasteful number, since it uses less digits than its factorization.

28328344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723 (or 3719 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 28328344 is about 5322.4377873302. The cubic root of 28328344 is about 304.8412467746.

The spelling of 28328344 in words is "twenty-eight million, three hundred twenty-eight thousand, three hundred forty-four".