222128364 has 24 divisors (see below), whose sum is σ = 520233840. Its totient is φ = 73766464.

The previous prime is 222128339. The next prime is 222128369. The reversal of 222128364 is 463821222.

It is not an unprimeable number, because it can be changed into a prime (222128369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31179 + ... + 37634.

It is an arithmetic number, because the mean of its divisors is an integer number (21676410).

Almost surely, 2^222128364 is an apocalyptic number.

It is an amenable number.

222128364 is an abundant number, since it is smaller than the sum of its proper divisors (298105476).

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

222128364 is a wasteful number, since it uses less digits than its factorization.

222128364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69089 (or 69087 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 222128364 is about 14903.9714170418. The cubic root of 222128364 is about 605.6215764146.

Adding to 222128364 its reverse (463821222), we get a palindrome (685949586).

The spelling of 222128364 in words is "two hundred twenty-two million, one hundred twenty-eight thousand, three hundred sixty-four".