22224210 has 64 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 5480640.

The previous prime is 22224203. The next prime is 22224211. The reversal of 22224210 is 1242222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22224210.

It is not an unprimeable number, because it can be changed into a prime (22224211) 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, 20871 + ... + 21909.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 2^22224210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22224210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28753920).

22224210 is an abundant number, since it is smaller than the sum of its proper divisors (35283630).

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

22224210 is a wasteful number, since it uses less digits than its factorization.

22224210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22224210 is about 4714.2560388676. The cubic root of 22224210 is about 281.1526043009.

Adding to 22224210 its reverse (1242222), we get a palindrome (23466432).

The spelling of 22224210 in words is "twenty-two million, two hundred twenty-four thousand, two hundred ten".