22216250 has 40 divisors (see below), whose sum is σ = 47609760. Its totient is φ = 7614000.

The previous prime is 22216241. The next prime is 22216267. The reversal of 22216250 is 5261222.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7481 + ... + 10019.

It is an arithmetic number, because the mean of its divisors is an integer number (1190244).

Almost surely, 2^22216250 is an apocalyptic number.

22216250 is an abundant number, since it is smaller than the sum of its proper divisors (25393510).

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

22216250 is an equidigital number, since it uses as much as digits as its factorization.

22216250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22216250 is about 4713.4117155199. The cubic root of 22216250 is about 281.1190336741.

Adding to 22216250 its reverse (5261222), we get a palindrome (27477472).

The spelling of 22216250 in words is "twenty-two million, two hundred sixteen thousand, two hundred fifty".