729744756 has 48 divisors (see below), whose sum is σ = 1838492544. Its totient is φ = 223952256.

The previous prime is 729744739. The next prime is 729744781. The reversal of 729744756 is 657447927.

It is a junction number, because it is equal to n+sod(n) for n = 729744699 and 729744708.

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 15 ways as a sum of consecutive naturals, for example, 56041 + ... + 67823.

It is an arithmetic number, because the mean of its divisors is an integer number (38301928).

Almost surely, 2^729744756 is an apocalyptic number.

It is an amenable number.

729744756 is an abundant number, since it is smaller than the sum of its proper divisors (1108747788).

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

729744756 is a wasteful number, since it uses less digits than its factorization.

729744756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12200 (or 12198 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 51.

The square root of 729744756 is about 27013.7882571105. The cubic root of 729744756 is about 900.3063796405.

The spelling of 729744756 in words is "seven hundred twenty-nine million, seven hundred forty-four thousand, seven hundred fifty-six".