728764918 has 8 divisors (see below), whose sum is σ = 1249311312. Its totient is φ = 312327816.

The previous prime is 728764879. The next prime is 728764919. The reversal of 728764918 is 819467827.

728764918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728764919) 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, 26027305 + ... + 26027332.

It is an arithmetic number, because the mean of its divisors is an integer number (156163914).

Almost surely, 2^728764918 is an apocalyptic number.

728764918 is a deficient number, since it is larger than the sum of its proper divisors (520546394).

728764918 is a wasteful number, since it uses less digits than its factorization.

728764918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52054646.

The product of its digits is 1354752, while the sum is 52.

The square root of 728764918 is about 26995.6462786131. The cubic root of 728764918 is about 899.9032480355.

The spelling of 728764918 in words is "seven hundred twenty-eight million, seven hundred sixty-four thousand, nine hundred eighteen".