22232304 has 60 divisors (see below), whose sum is σ = 63264552. Its totient is φ = 7286400.

The previous prime is 22232279. The next prime is 22232317. The reversal of 22232304 is 40323222.

It is a super-2 number, since 2×22232304² = 988550682296832, which contains 22 as substring.

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

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7519 + ... + 10049.

Almost surely, 2^22232304 is an apocalyptic number.

22232304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22232304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31632276).

22232304 is an abundant number, since it is smaller than the sum of its proper divisors (41032248).

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

22232304 is a wasteful number, since it uses less digits than its factorization.

22232304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2597 counting only the distinct ones).

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

The square root of 22232304 is about 4715.1144206689. The cubic root of 22232304 is about 281.1867318428.

Adding to 22232304 its reverse (40323222), we get a palindrome (62555526).

The spelling of 22232304 in words is "twenty-two million, two hundred thirty-two thousand, three hundred four".