222185872 has 40 divisors (see below), whose sum is σ = 437472000. Its totient is φ = 109304832.

The previous prime is 222185861. The next prime is 222185879. The reversal of 222185872 is 278581222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222185879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370629 + ... + 371227.

It is an arithmetic number, because the mean of its divisors is an integer number (10936800).

Almost surely, 2^222185872 is an apocalyptic number.

It is an amenable number.

222185872 is a deficient number, since it is larger than the sum of its proper divisors (215286128).

222185872 is a wasteful number, since it uses less digits than its factorization.

222185872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 937 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 222185872 is about 14905.9005766173. The cubic root of 222185872 is about 605.6738361078.

The spelling of 222185872 in words is "two hundred twenty-two million, one hundred eighty-five thousand, eight hundred seventy-two".