728735360 has 32 divisors (see below), whose sum is σ = 1742134500. Its totient is φ = 291493888.

The previous prime is 728735333. The next prime is 728735363. The reversal of 728735360 is 63537827.

It can be written as a sum of positive squares in 2 ways, for example, as 699919936 + 28815424 = 26456^2 + 5368^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (728735363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568685 + ... + 569964.

Almost surely, 2^728735360 is an apocalyptic number.

It is an amenable number.

728735360 is an abundant number, since it is smaller than the sum of its proper divisors (1013399140).

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

728735360 is a wasteful number, since it uses less digits than its factorization.

728735360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138668 (or 1138656 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 728735360 is about 26995.0988144144. The cubic root of 728735360 is about 899.8910814694.

The spelling of 728735360 in words is "seven hundred twenty-eight million, seven hundred thirty-five thousand, three hundred sixty".