728939566432 has 48 divisors (see below), whose sum is σ = 1789215305472. Its totient is φ = 284002427520.

The previous prime is 728939566417. The next prime is 728939566469. The reversal of 728939566432 is 234665939827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147915468 + ... + 147920395.

It is an arithmetic number, because the mean of its divisors is an integer number (37275318864).

Almost surely, 2^728939566432 is an apocalyptic number.

It is an amenable number.

728939566432 is an abundant number, since it is smaller than the sum of its proper divisors (1060275739040).

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

728939566432 is a wasteful number, since it uses less digits than its factorization.

728939566432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295835891 (or 295835883 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 64.

The spelling of 728939566432 in words is "seven hundred twenty-eight billion, nine hundred thirty-nine million, five hundred sixty-six thousand, four hundred thirty-two".