722222828 has 12 divisors (see below), whose sum is σ = 1268389752. Its totient is φ = 359825760.

The previous prime is 722222803. The next prime is 722222843. The reversal of 722222828 is 828222227.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320150 + ... + 322397.

It is an arithmetic number, because the mean of its divisors is an integer number (105699146).

Almost surely, 2^722222828 is an apocalyptic number.

It is an amenable number.

722222828 is a deficient number, since it is larger than the sum of its proper divisors (546166924).

722222828 is a wasteful number, since it uses less digits than its factorization.

722222828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642832 (or 642830 counting only the distinct ones).

The product of its digits is 28672, while the sum is 35.

The square root of 722222828 is about 26874.2037649490. The cubic root of 722222828 is about 897.2023528630.

The spelling of 722222828 in words is "seven hundred twenty-two million, two hundred twenty-two thousand, eight hundred twenty-eight".