729139730 has 32 divisors (see below), whose sum is σ = 1445169600. Its totient is φ = 262659520.

The previous prime is 729139729. The next prime is 729139739. The reversal of 729139730 is 37931927.

729139730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (729139739) 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, 19205 + ... + 42744.

It is an arithmetic number, because the mean of its divisors is an integer number (45161550).

Almost surely, 2^729139730 is an apocalyptic number.

729139730 is a deficient number, since it is larger than the sum of its proper divisors (716029870).

729139730 is a wasteful number, since it uses less digits than its factorization.

729139730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62074.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 729139730 is about 27002.5874686112. The cubic root of 729139730 is about 900.0574983841.

The spelling of 729139730 in words is "seven hundred twenty-nine million, one hundred thirty-nine thousand, seven hundred thirty".