728847660 has 48 divisors (see below), whose sum is σ = 2069528832. Its totient is φ = 191620800.

The previous prime is 728847599. The next prime is 728847661. The reversal of 728847660 is 66748827.

728847660 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 2×728847660² = 1062437822974951200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728847661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81286 + ... + 89805.

It is an arithmetic number, because the mean of its divisors is an integer number (43115184).

Almost surely, 2^728847660 is an apocalyptic number.

It is an amenable number.

728847660 is an abundant number, since it is smaller than the sum of its proper divisors (1340681172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728847660 is a wasteful number, since it uses less digits than its factorization.

728847660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171174 (or 171172 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 728847660 is about 26997.1787414907. The cubic root of 728847660 is about 899.9373042746.

The spelling of 728847660 in words is "seven hundred twenty-eight million, eight hundred forty-seven thousand, six hundred sixty".