729726 has 8 divisors (see below), whose sum is σ = 1459464. Its totient is φ = 243240.

The previous prime is 729719. The next prime is 729737. The reversal of 729726 is 627927.

It is a sphenic number, since it is the product of 3 distinct primes.

729726 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60805 + ... + 60816.

It is an arithmetic number, because the mean of its divisors is an integer number (182433).

2⁷²⁹⁷²⁶ is an apocalyptic number.

729726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

729726 is a wasteful number, since it uses less digits than its factorization.

729726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121626.

The product of its digits is 10584, while the sum is 33.

The square root of 729726 is about 854.2400131111. The cubic root of 729726 is about 90.0298666308.

The spelling of 729726 in words is "seven hundred twenty-nine thousand, seven hundred twenty-six".