728522516 has 24 divisors (see below), whose sum is σ = 1347198720. Its totient is φ = 344009952.

The previous prime is 728522507. The next prime is 728522569. The reversal of 728522516 is 615225827.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 728522516.

It is a congruent number.

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, 42851 + ... + 57386.

It is an arithmetic number, because the mean of its divisors is an integer number (56133280).

Almost surely, 2^728522516 is an apocalyptic number.

It is an amenable number.

728522516 is a deficient number, since it is larger than the sum of its proper divisors (618676204).

728522516 is a wasteful number, since it uses less digits than its factorization.

728522516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100343 (or 100341 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 728522516 is about 26991.1562553367. The cubic root of 728522516 is about 899.8034616106.

The spelling of 728522516 in words is "seven hundred twenty-eight million, five hundred twenty-two thousand, five hundred sixteen".