728822672 has 40 divisors (see below), whose sum is σ = 1489220160. Its totient is φ = 344580480.

The previous prime is 728822671. The next prime is 728822701. The reversal of 728822672 is 276228827.

728822672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (728822671) 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, 184397 + ... + 188307.

It is an arithmetic number, because the mean of its divisors is an integer number (37230504).

Almost surely, 2^728822672 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 728822672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744610080).

728822672 is an abundant number, since it is smaller than the sum of its proper divisors (760397488).

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

728822672 is a wasteful number, since it uses less digits than its factorization.

728822672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4545 counting only the distinct ones).

The product of its digits is 301056, while the sum is 44.

The square root of 728822672 is about 26996.7159484260. The cubic root of 728822672 is about 899.9270195966.

The spelling of 728822672 in words is "seven hundred twenty-eight million, eight hundred twenty-two thousand, six hundred seventy-two".