22205304 has 144 divisors (see below), whose sum is σ = 69877080. Its totient is φ = 6314880.

The previous prime is 22205303. The next prime is 22205311. The reversal of 22205304 is 40350222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205303) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 418942 + ... + 418994.

Almost surely, 2^22205304 is an apocalyptic number.

22205304 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 22205304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34938540).

22205304 is an abundant number, since it is smaller than the sum of its proper divisors (47671776).

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

22205304 is a wasteful number, since it uses less digits than its factorization.

22205304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 92 counting only the distinct ones).

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

The square root of 22205304 is about 4712.2504177940. The cubic root of 22205304 is about 281.0728567473.

Adding to 22205304 its reverse (40350222), we get a palindrome (62555526).

The spelling of 22205304 in words is "twenty-two million, two hundred five thousand, three hundred four".