729635740 has 12 divisors (see below), whose sum is σ = 1532235096. Its totient is φ = 291854288.

The previous prime is 729635729. The next prime is 729635749. The reversal of 729635740 is 47536927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729635749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18240874 + ... + 18240913.

It is an arithmetic number, because the mean of its divisors is an integer number (127686258).

Almost surely, 2^729635740 is an apocalyptic number.

It is an amenable number.

729635740 is an abundant number, since it is smaller than the sum of its proper divisors (802599356).

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

729635740 is a wasteful number, since it uses less digits than its factorization.

729635740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36481796 (or 36481794 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 729635740 is about 27011.7703973657. The cubic root of 729635740 is about 900.2615453852.

The spelling of 729635740 in words is "seven hundred twenty-nine million, six hundred thirty-five thousand, seven hundred forty".