222173328 has 80 divisors (see below), whose sum is σ = 620238080. Its totient is φ = 68124672.

The previous prime is 222173317. The next prime is 222173333. The reversal of 222173328 is 823371222.

It is a junction number, because it is equal to n+sod(n) for n = 222173295 and 222173304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288528 + ... + 289296.

It is an arithmetic number, because the mean of its divisors is an integer number (7752976).

Almost surely, 2^222173328 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 222173328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310119040).

222173328 is an abundant number, since it is smaller than the sum of its proper divisors (398064752).

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

222173328 is a wasteful number, since it uses less digits than its factorization.

222173328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1250 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 222173328 is about 14905.4797977120. The cubic root of 222173328 is about 605.6624376699.

The spelling of 222173328 in words is "two hundred twenty-two million, one hundred seventy-three thousand, three hundred twenty-eight".