22430436 has 72 divisors (see below), whose sum is σ = 62588736. Its totient is φ = 6229440.

The previous prime is 22430423. The next prime is 22430437. The reversal of 22430436 is 63403422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22430437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21241 + ... + 22271.

It is an arithmetic number, because the mean of its divisors is an integer number (869288).

Almost surely, 2^22430436 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 22430436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31294368).

22430436 is an abundant number, since it is smaller than the sum of its proper divisors (40158300).

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

22430436 is a wasteful number, since it uses less digits than its factorization.

22430436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 22430436 is about 4736.0781243556. The cubic root of 22430436 is about 282.0195650628.

Adding to 22430436 its reverse (63403422), we get a palindrome (85833858).

The spelling of 22430436 in words is "twenty-two million, four hundred thirty thousand, four hundred thirty-six".