729568478 has 8 divisors (see below), whose sum is σ = 1094480760. Its totient is φ = 364741560.

The previous prime is 729568471. The next prime is 729568513. The reversal of 729568478 is 874865927.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729568471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8213 + ... + 39071.

It is an arithmetic number, because the mean of its divisors is an integer number (136810095).

Almost surely, 2^729568478 is an apocalyptic number.

729568478 is a deficient number, since it is larger than the sum of its proper divisors (364912282).

729568478 is a wasteful number, since it uses less digits than its factorization.

729568478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42682.

The product of its digits is 6773760, while the sum is 56.

The square root of 729568478 is about 27010.5253188456. The cubic root of 729568478 is about 900.2338807805.

The spelling of 729568478 in words is "seven hundred twenty-nine million, five hundred sixty-eight thousand, four hundred seventy-eight".