729438368 has 12 divisors (see below), whose sum is σ = 1436081850. Its totient is φ = 364719168.

The previous prime is 729438361. The next prime is 729438377. The reversal of 729438368 is 863834927.

It can be written as a sum of positive squares in only one way, i.e., 513113104 + 216325264 = 22652^2 + 14708^2 .

It is not an unprimeable number, because it can be changed into a prime (729438361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11397443 + ... + 11397506.

Almost surely, 2^729438368 is an apocalyptic number.

It is an amenable number.

729438368 is a deficient number, since it is larger than the sum of its proper divisors (706643482).

729438368 is a wasteful number, since it uses less digits than its factorization.

729438368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794959 (or 22794951 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 729438368 is about 27008.1167059090. The cubic root of 729438368 is about 900.1803622065.

The spelling of 729438368 in words is "seven hundred twenty-nine million, four hundred thirty-eight thousand, three hundred sixty-eight".