728603234020 has 12 divisors (see below), whose sum is σ = 1530066791484. Its totient is φ = 291441293600.

The previous prime is 728603233973. The next prime is 728603234041. The reversal of 728603234020 is 20432306827.

It can be written as a sum of positive squares in 2 ways, for example, as 269626793536 + 458976440484 = 519256^2 + 677478^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18215080831 + ... + 18215080870.

It is an arithmetic number, because the mean of its divisors is an integer number (127505565957).

Almost surely, 2^728603234020 is an apocalyptic number.

It is an amenable number.

728603234020 is an abundant number, since it is smaller than the sum of its proper divisors (801463557464).

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

728603234020 is a wasteful number, since it uses less digits than its factorization.

728603234020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36430161710 (or 36430161708 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 728603234020 in words is "seven hundred twenty-eight billion, six hundred three million, two hundred thirty-four thousand, twenty".