729243616 has 12 divisors (see below), whose sum is σ = 1435698432. Its totient is φ = 364621792.

The previous prime is 729243607. The next prime is 729243631. The reversal of 729243616 is 616342927.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11394400 + ... + 11394463.

It is an arithmetic number, because the mean of its divisors is an integer number (119641536).

Almost surely, 2^729243616 is an apocalyptic number.

It is an amenable number.

729243616 is a deficient number, since it is larger than the sum of its proper divisors (706454816).

729243616 is a wasteful number, since it uses less digits than its factorization.

729243616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22788873 (or 22788865 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 729243616 is about 27004.5110305667. The cubic root of 729243616 is about 900.1002423325.

The spelling of 729243616 in words is "seven hundred twenty-nine million, two hundred forty-three thousand, six hundred sixteen".