729161504 has 24 divisors (see below), whose sum is σ = 1440736668. Its totient is φ = 363260160.

The previous prime is 729161497. The next prime is 729161549. The reversal of 729161504 is 405161927.

729161504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 607721104 + 121440400 = 24652^2 + 11020^2 .

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, 32267 + ... + 49994.

Almost surely, 2^729161504 is an apocalyptic number.

It is an amenable number.

729161504 is a deficient number, since it is larger than the sum of its proper divisors (711575164).

729161504 is a wasteful number, since it uses less digits than its factorization.

729161504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82548 (or 82540 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 729161504 is about 27002.9906491855. The cubic root of 729161504 is about 900.0664576440.

The spelling of 729161504 in words is "seven hundred twenty-nine million, one hundred sixty-one thousand, five hundred four".