728982240722 has 6 divisors (see below), whose sum is σ = 1093475172279. Its totient is φ = 364490516630.

The previous prime is 728982240703. The next prime is 728982240733. The reversal of 728982240722 is 227042289827.

It can be written as a sum of positive squares in only one way, i.e., 364491120361 + 364491120361 = 603731^2 + 603731^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=603731.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 905597 + ... + 1509327.

Almost surely, 2^728982240722 is an apocalyptic number.

728982240722 is a deficient number, since it is larger than the sum of its proper divisors (364492931557).

728982240722 is an frugal number, since it uses more digits than its factorization.

728982240722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207464 (or 603733 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 728982240722 in words is "seven hundred twenty-eight billion, nine hundred eighty-two million, two hundred forty thousand, seven hundred twenty-two".