22304436 has 96 divisors (see below), whose sum is σ = 65802240. Its totient is φ = 5712000.

The previous prime is 22304417. The next prime is 22304441. The reversal of 22304436 is 63440322.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93205 + ... + 93443.

It is an arithmetic number, because the mean of its divisors is an integer number (685440).

Almost surely, 2^22304436 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 22304436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32901120).

22304436 is an abundant number, since it is smaller than the sum of its proper divisors (43497804).

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

22304436 is a wasteful number, since it uses less digits than its factorization.

22304436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 363 counting only the distinct ones).

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

The square root of 22304436 is about 4722.7572455082. The cubic root of 22304436 is about 281.4905040087.

Adding to 22304436 its reverse (63440322), we get a palindrome (85744758).

It can be divided in two parts, 2230 and 4436, that added together give a palindrome (6666).

The spelling of 22304436 in words is "twenty-two million, three hundred four thousand, four hundred thirty-six".