728338556 has 12 divisors (see below), whose sum is σ = 1390464600. Its totient is φ = 331062960.

The previous prime is 728338511. The next prime is 728338577. The reversal of 728338556 is 655833827.

728338556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 728338556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8276531 + ... + 8276618.

It is an arithmetic number, because the mean of its divisors is an integer number (115872050).

Almost surely, 2^728338556 is an apocalyptic number.

It is an amenable number.

728338556 is a deficient number, since it is larger than the sum of its proper divisors (662126044).

728338556 is a wasteful number, since it uses less digits than its factorization.

728338556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16553164 (or 16553162 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 728338556 is about 26987.7482573111. The cubic root of 728338556 is about 899.7277184566.

The spelling of 728338556 in words is "seven hundred twenty-eight million, three hundred thirty-eight thousand, five hundred fifty-six".