222328788 has 72 divisors (see below), whose sum is σ = 603824256. Its totient is φ = 63402240.

The previous prime is 222328783. The next prime is 222328793. The reversal of 222328788 is 887823222.

222328788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222328783) and next prime (222328793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222328781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20181 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (8386448).

Almost surely, 2^222328788 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 222328788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301912128).

222328788 is an abundant number, since it is smaller than the sum of its proper divisors (381495468).

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

222328788 is a wasteful number, since it uses less digits than its factorization.

222328788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9053 (or 9040 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 222328788 is about 14910.6937464358. The cubic root of 222328788 is about 605.8036702394.

The spelling of 222328788 in words is "two hundred twenty-two million, three hundred twenty-eight thousand, seven hundred eighty-eight".