728304 has 20 divisors (see below), whose sum is σ = 1881576. Its totient is φ = 242752.

The previous prime is 728303. The next prime is 728317. The reversal of 728304 is 403827.

728304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7539 + ... + 7634.

2⁷²⁸³⁰⁴ is an apocalyptic number.

It is an amenable number.

728304 is an abundant number, since it is smaller than the sum of its proper divisors (1153272).

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

728304 is a wasteful number, since it uses less digits than its factorization.

728304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15184 (or 15178 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 728304 is about 853.4072884620. The cubic root of 728304 is about 89.9713489047.

The spelling of 728304 in words is "seven hundred twenty-eight thousand, three hundred four".