22243230 has 48 divisors (see below), whose sum is σ = 58428864. Its totient is φ = 5870400.

The previous prime is 22243229. The next prime is 22243283. The reversal of 22243230 is 3234222.

It is a super-2 number, since 2×22243230² = 989522561665800, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7867 + ... + 10313.

It is an arithmetic number, because the mean of its divisors is an integer number (1217268).

Almost surely, 2^22243230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22243230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29214432).

22243230 is an abundant number, since it is smaller than the sum of its proper divisors (36185634).

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

22243230 is a wasteful number, since it uses less digits than its factorization.

22243230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2558 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22243230 is about 4716.2728928678. The cubic root of 22243230 is about 281.2327870947.

Adding to 22243230 its reverse (3234222), we get a palindrome (25477452).

The spelling of 22243230 in words is "twenty-two million, two hundred forty-three thousand, two hundred thirty".