728412927 has 16 divisors (see below), whose sum is σ = 1074435840. Its totient is φ = 435243200.

The previous prime is 728412917. The next prime is 728412947. The reversal of 728412927 is 729214827.

It is a cyclic number.

It is not a de Polignac number, because 728412927 - 2⁶ = 728412863 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728412917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153102 + ... + 157787.

It is an arithmetic number, because the mean of its divisors is an integer number (67152240).

Almost surely, 2^728412927 is an apocalyptic number.

728412927 is a deficient number, since it is larger than the sum of its proper divisors (346022913).

728412927 is a wasteful number, since it uses less digits than its factorization.

728412927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310974.

The product of its digits is 112896, while the sum is 42.

The square root of 728412927 is about 26989.1260881119. The cubic root of 728412927 is about 899.7583412909.

The spelling of 728412927 in words is "seven hundred twenty-eight million, four hundred twelve thousand, nine hundred twenty-seven".