22236270 has 64 divisors (see below), whose sum is σ = 64212480. Its totient is φ = 4814208.

The previous prime is 22236259. The next prime is 22236283. The reversal of 22236270 is 7263222.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22236270.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1204 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (1003320).

Almost surely, 2^22236270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22236270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32106240).

22236270 is an abundant number, since it is smaller than the sum of its proper divisors (41976210).

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

22236270 is a wasteful number, since it uses less digits than its factorization.

22236270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 22236270 is about 4715.5349643492. The cubic root of 22236270 is about 281.2034510617.

Adding to 22236270 its reverse (7263222), we get a palindrome (29499492).

The spelling of 22236270 in words is "twenty-two million, two hundred thirty-six thousand, two hundred seventy".