728839012 has 24 divisors (see below), whose sum is σ = 1464654240. Its totient is φ = 313853760.

The previous prime is 728839009. The next prime is 728839037. The reversal of 728839012 is 210938827.

728839012 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 2×728839012² = 1062412610826272288, which contains 22 as substring.

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, 435073 + ... + 436744.

It is an arithmetic number, because the mean of its divisors is an integer number (61027260).

Almost surely, 2^728839012 is an apocalyptic number.

It is an amenable number.

728839012 is an abundant number, since it is smaller than the sum of its proper divisors (735815228).

728839012 is a wasteful number, since it uses less digits than its factorization.

728839012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871851 (or 871849 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 728839012 is about 26997.0185761317. The cubic root of 728839012 is about 899.9337449169.

The spelling of 728839012 in words is "seven hundred twenty-eight million, eight hundred thirty-nine thousand, twelve".