722245228 has 12 divisors (see below), whose sum is σ = 1281731472. Its totient is φ = 356036240.

The previous prime is 722245213. The next prime is 722245229. The reversal of 722245228 is 822542227.

It is a junction number, because it is equal to n+sod(n) for n = 722245193 and 722245202.

It is not an unprimeable number, because it can be changed into a prime (722245229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271275 + ... + 1271842.

It is an arithmetic number, because the mean of its divisors is an integer number (106810956).

Almost surely, 2^722245228 is an apocalyptic number.

It is an amenable number.

722245228 is a deficient number, since it is larger than the sum of its proper divisors (559486244).

722245228 is a wasteful number, since it uses less digits than its factorization.

722245228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543192 (or 2543190 counting only the distinct ones).

The product of its digits is 35840, while the sum is 34.

The square root of 722245228 is about 26874.6205182510. The cubic root of 722245228 is about 897.2116284513.

The spelling of 722245228 in words is "seven hundred twenty-two million, two hundred forty-five thousand, two hundred twenty-eight".