222164250 has 128 divisors (see below), whose sum is σ = 691531776. Its totient is φ = 46152000.

The previous prime is 222164209. The next prime is 222164297. The reversal of 222164250 is 52461222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222164250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55827 + ... + 59673.

It is an arithmetic number, because the mean of its divisors is an integer number (5402592).

Almost surely, 2^222164250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222164250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345765888).

222164250 is an abundant number, since it is smaller than the sum of its proper divisors (469367526).

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

222164250 is a wasteful number, since it uses less digits than its factorization.

222164250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 222164250 is about 14905.1752757222. The cubic root of 222164250 is about 605.6541884371.

The spelling of 222164250 in words is "two hundred twenty-two million, one hundred sixty-four thousand, two hundred fifty".