728668264 has 16 divisors (see below), whose sum is σ = 1368083520. Its totient is φ = 363846000.

The previous prime is 728668249. The next prime is 728668279. The reversal of 728668264 is 462866827.

728668264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (728668249) and next prime (728668279).

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, 54634 + ... + 66649.

It is an arithmetic number, because the mean of its divisors is an integer number (85505220).

Almost surely, 2^728668264 is an apocalyptic number.

It is an amenable number.

728668264 is a deficient number, since it is larger than the sum of its proper divisors (639415256).

728668264 is a wasteful number, since it uses less digits than its factorization.

728668264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122040 (or 122036 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 728668264 is about 26993.8560416996. The cubic root of 728668264 is about 899.8634624147.

The spelling of 728668264 in words is "seven hundred twenty-eight million, six hundred sixty-eight thousand, two hundred sixty-four".