222845988 has 96 divisors (see below), whose sum is σ = 568995840. Its totient is φ = 67682560.

The previous prime is 222845983. The next prime is 222845989. The reversal of 222845988 is 889548222.

It is a happy number.

It is a super-2 number, since 2×222845988² = 99320668735392288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222845983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531643 + ... + 532061.

It is an arithmetic number, because the mean of its divisors is an integer number (5927040).

Almost surely, 2^222845988 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 222845988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284497920).

222845988 is an abundant number, since it is smaller than the sum of its proper divisors (346149852).

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

222845988 is a wasteful number, since it uses less digits than its factorization.

222845988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 222845988 is about 14928.0269292362. The cubic root of 222845988 is about 606.2730636636.

The spelling of 222845988 in words is "two hundred twenty-two million, eight hundred forty-five thousand, nine hundred eighty-eight".