729230726 has 16 divisors (see below), whose sum is σ = 1267236384. Its totient is φ = 308245824.

The previous prime is 729230707. The next prime is 729230731. The reversal of 729230726 is 627032927.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 729230726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355745 + ... + 357788.

It is an arithmetic number, because the mean of its divisors is an integer number (79202274).

Almost surely, 2^729230726 is an apocalyptic number.

729230726 is a deficient number, since it is larger than the sum of its proper divisors (538005658).

729230726 is a wasteful number, since it uses less digits than its factorization.

729230726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713615.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 729230726 is about 27004.2723656832. The cubic root of 729230726 is about 900.0949389559.

The spelling of 729230726 in words is "seven hundred twenty-nine million, two hundred thirty thousand, seven hundred twenty-six".