729732 has 12 divisors (see below), whose sum is σ = 1702736. Its totient is φ = 243240.

The previous prime is 729719. The next prime is 729737. The reversal of 729732 is 237927.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 729732.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 729732.

It is not an unprimeable number, because it can be changed into a prime (729737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30394 + ... + 30417.

2⁷²⁹⁷³² is an apocalyptic number.

It is an amenable number.

729732 is an abundant number, since it is smaller than the sum of its proper divisors (973004).

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

729732 is a wasteful number, since it uses less digits than its factorization.

729732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60818 (or 60816 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 729732 is about 854.2435249974. The cubic root of 729732 is about 90.0301133799.

The spelling of 729732 in words is "seven hundred twenty-nine thousand, seven hundred thirty-two".