728533896 has 32 divisors (see below), whose sum is σ = 1838363040. Its totient is φ = 240574208.

The previous prime is 728533867. The next prime is 728533909. The reversal of 728533896 is 698335827.

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, 139281 + ... + 144416.

It is an arithmetic number, because the mean of its divisors is an integer number (57448845).

Almost surely, 2^728533896 is an apocalyptic number.

It is an amenable number.

728533896 is an abundant number, since it is smaller than the sum of its proper divisors (1109829144).

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

728533896 is a wasteful number, since it uses less digits than its factorization.

728533896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283813 (or 283809 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 728533896 is about 26991.3670643041. The cubic root of 728533896 is about 899.8081467598.

The spelling of 728533896 in words is "seven hundred twenty-eight million, five hundred thirty-three thousand, eight hundred ninety-six".