22190236 has 24 divisors (see below), whose sum is σ = 42078960. Its totient is φ = 10198272.

The previous prime is 22190227. The next prime is 22190243. The reversal of 22190236 is 63209122.

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 22190236.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 871 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (1753290).

Almost surely, 2^22190236 is an apocalyptic number.

It is an amenable number.

22190236 is a deficient number, since it is larger than the sum of its proper divisors (19888724).

22190236 is a wasteful number, since it uses less digits than its factorization.

22190236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653 (or 7651 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 22190236 is about 4710.6513350067. The cubic root of 22190236 is about 281.0092658723.

Adding to 22190236 its reverse (63209122), we get a palindrome (85399358).

The spelling of 22190236 in words is "twenty-two million, one hundred ninety thousand, two hundred thirty-six".