22552236 has 96 divisors (see below), whose sum is σ = 69780480. Its totient is φ = 6158592.

The previous prime is 22552199. The next prime is 22552237. The reversal of 22552236 is 63225522.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22552237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16740 + ... + 18036.

It is an arithmetic number, because the mean of its divisors is an integer number (726880).

Almost surely, 2^22552236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22552236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34890240).

22552236 is an abundant number, since it is smaller than the sum of its proper divisors (47228244).

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

22552236 is a wasteful number, since it uses less digits than its factorization.

22552236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1332 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 22552236 is about 4748.9194560447. The cubic root of 22552236 is about 282.5291107391.

Adding to 22552236 its reverse (63225522), we get a palindrome (85777758).

The spelling of 22552236 in words is "twenty-two million, five hundred fifty-two thousand, two hundred thirty-six".