722928768 has 64 divisors (see below), whose sum is σ = 1925392800. Its totient is φ = 240334848.

The previous prime is 722928749. The next prime is 722928793. The reversal of 722928768 is 867829227.

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

It is a self number, because there is not a number n which added to its sum of digits gives 722928768.

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, 154755 + ... + 159357.

Almost surely, 2^722928768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722928768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962696400).

722928768 is an abundant number, since it is smaller than the sum of its proper divisors (1202464032).

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

722928768 is a wasteful number, since it uses less digits than its factorization.

722928768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5017 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 722928768 is about 26887.3347135784. The cubic root of 722928768 is about 897.4945825150.

The spelling of 722928768 in words is "seven hundred twenty-two million, nine hundred twenty-eight thousand, seven hundred sixty-eight".