22252230 has 288 divisors, whose sum is σ = 82218240. Its totient is φ = 4043520.

The previous prime is 22252229. The next prime is 22252261. The reversal of 22252230 is 3225222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1171161 + ... + 1171179.

It is an arithmetic number, because the mean of its divisors is an integer number (285480).

Almost surely, 2^22252230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22252230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41109120).

22252230 is an abundant number, since it is smaller than the sum of its proper divisors (59966010).

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

22252230 is a wasteful number, since it uses less digits than its factorization.

22252230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22252230 is about 4717.2269396331. The cubic root of 22252230 is about 281.2707125487.

Adding to 22252230 its reverse (3225222), we get a palindrome (25477452).

It can be divided in two parts, 22 and 252230, that added together give a palindrome (252252).

The spelling of 22252230 in words is "twenty-two million, two hundred fifty-two thousand, two hundred thirty".