728720129152 has 64 divisors (see below), whose sum is σ = 1528332422400. Its totient is φ = 345143116800.

The previous prime is 728720129149. The next prime is 728720129231. The reversal of 728720129152 is 251921027827.

It is a tau number, because it is divible by the number of its divisors (64).

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, 37883377 + ... + 37902607.

It is an arithmetic number, because the mean of its divisors is an integer number (23880194100).

Almost surely, 2^728720129152 is an apocalyptic number.

It is an amenable number.

728720129152 is an abundant number, since it is smaller than the sum of its proper divisors (799612293248).

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

728720129152 is a wasteful number, since it uses less digits than its factorization.

728720129152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34845 (or 34833 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 728720129152 in words is "seven hundred twenty-eight billion, seven hundred twenty million, one hundred twenty-nine thousand, one hundred fifty-two".