729432545 has 8 divisors (see below), whose sum is σ = 875497896. Its totient is φ = 583426816.

The previous prime is 729432479. The next prime is 729432547. The reversal of 729432545 is 545234927.

729432545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33686416 + 695746129 = 5804^2 + 26377^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729432545 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729432547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19049 + ... + 42681.

It is an arithmetic number, because the mean of its divisors is an integer number (109437237).

Almost surely, 2^729432545 is an apocalyptic number.

It is an amenable number.

729432545 is a deficient number, since it is larger than the sum of its proper divisors (146065351).

729432545 is a wasteful number, since it uses less digits than its factorization.

729432545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29811.

The product of its digits is 302400, while the sum is 41.

The square root of 729432545 is about 27008.0089047675. The cubic root of 729432545 is about 900.1779668640.

The spelling of 729432545 in words is "seven hundred twenty-nine million, four hundred thirty-two thousand, five hundred forty-five".