722828128 has 36 divisors (see below), whose sum is σ = 1553521788. Its totient is φ = 328328960.

The previous prime is 722828089. The next prime is 722828131. The reversal of 722828128 is 821828227.

722828128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 503700 + ... + 505132.

It is an arithmetic number, because the mean of its divisors is an integer number (43153383).

Almost surely, 2^722828128 is an apocalyptic number.

It is an amenable number.

722828128 is an abundant number, since it is smaller than the sum of its proper divisors (830693660).

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

722828128 is an equidigital number, since it uses as much as digits as its factorization.

722828128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 1446 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 722828128 is about 26885.4631353079. The cubic root of 722828128 is about 897.4529333925.

Subtracting 722828128 from its reverse (821828227), we obtain a palindrome (99000099).

The spelling of 722828128 in words is "seven hundred twenty-two million, eight hundred twenty-eight thousand, one hundred twenty-eight".