728606672708 has 12 divisors (see below), whose sum is σ = 1275244898172. Its totient is φ = 364250987520.

The previous prime is 728606672669. The next prime is 728606672749. The reversal of 728606672708 is 807276606827.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 484301862724 + 244304809984 = 695918^2 + 494272^2 .

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, 13055885 + ... + 13111572.

It is an arithmetic number, because the mean of its divisors is an integer number (106270408181).

Almost surely, 2^728606672708 is an apocalyptic number.

It is an amenable number.

728606672708 is a deficient number, since it is larger than the sum of its proper divisors (546638225464).

728606672708 is a wasteful number, since it uses less digits than its factorization.

728606672708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26174422 (or 26174420 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 728606672708 in words is "seven hundred twenty-eight billion, six hundred six million, six hundred seventy-two thousand, seven hundred eight".