728841328 has 20 divisors (see below), whose sum is σ = 1416594600. Its totient is φ = 363268544.

The previous prime is 728841283. The next prime is 728841329. The reversal of 728841328 is 823148827.

728841328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728841329) 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, 66778 + ... + 76921.

It is an arithmetic number, because the mean of its divisors is an integer number (70829730).

Almost surely, 2^728841328 is an apocalyptic number.

It is an amenable number.

728841328 is a deficient number, since it is larger than the sum of its proper divisors (687753272).

728841328 is a wasteful number, since it uses less digits than its factorization.

728841328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144024 (or 144018 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 728841328 is about 26997.0614697230. The cubic root of 728841328 is about 899.9346981426.

The spelling of 728841328 in words is "seven hundred twenty-eight million, eight hundred forty-one thousand, three hundred twenty-eight".