728020328 has 32 divisors (see below), whose sum is σ = 1561161600. Its totient is φ = 311785152.

The previous prime is 728020327. The next prime is 728020331. The reversal of 728020328 is 823020827.

728020328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 728020294 and 728020303.

It is not an unprimeable number, because it can be changed into a prime (728020327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91901 + ... + 99507.

It is an arithmetic number, because the mean of its divisors is an integer number (48786300).

Almost surely, 2^728020328 is an apocalyptic number.

It is an amenable number.

728020328 is an abundant number, since it is smaller than the sum of its proper divisors (833141272).

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

728020328 is a wasteful number, since it uses less digits than its factorization.

728020328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329 (or 9325 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 728020328 is about 26981.8518267372. The cubic root of 728020328 is about 899.5966620681.

The spelling of 728020328 in words is "seven hundred twenty-eight million, twenty thousand, three hundred twenty-eight".