728438916 has 24 divisors (see below), whose sum is σ = 1799673120. Its totient is φ = 228529792.

The previous prime is 728438873. The next prime is 728438939. The reversal of 728438916 is 619834827.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785186 + ... + 1785593.

It is an arithmetic number, because the mean of its divisors is an integer number (74986380).

Almost surely, 2^728438916 is an apocalyptic number.

It is an amenable number.

728438916 is an abundant number, since it is smaller than the sum of its proper divisors (1071234204).

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

728438916 is a wasteful number, since it uses less digits than its factorization.

728438916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570803 (or 3570801 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 728438916 is about 26989.6075555018. The cubic root of 728438916 is about 899.7690419712.

The spelling of 728438916 in words is "seven hundred twenty-eight million, four hundred thirty-eight thousand, nine hundred sixteen".