222689128 has 64 divisors (see below), whose sum is σ = 450748800. Its totient is φ = 102896640.

The previous prime is 222689113. The next prime is 222689141. The reversal of 222689128 is 821986222.

It is a happy number.

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, 792348 + ... + 792628.

It is an arithmetic number, because the mean of its divisors is an integer number (7042950).

Almost surely, 2^222689128 is an apocalyptic number.

It is an amenable number.

222689128 is an abundant number, since it is smaller than the sum of its proper divisors (228059672).

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

222689128 is a wasteful number, since it uses less digits than its factorization.

222689128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 222689128 is about 14922.7721285289. The cubic root of 222689128 is about 606.1307795750.

The spelling of 222689128 in words is "two hundred twenty-two million, six hundred eighty-nine thousand, one hundred twenty-eight".