22204416 has 104 divisors (see below), whose sum is σ = 64217440. Its totient is φ = 6782976.

The previous prime is 22204381. The next prime is 22204417. The reversal of 22204416 is 61440222.

It is a tau number, because it is divible by the number of its divisors (104).

It is a junction number, because it is equal to n+sod(n) for n = 22204392 and 22204401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159675 + ... + 159813.

Almost surely, 2^22204416 is an apocalyptic number.

22204416 is a gapful number since it is divisible by the number (26) 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 22204416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32108720).

22204416 is an abundant number, since it is smaller than the sum of its proper divisors (42013024).

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

22204416 is a wasteful number, since it uses less digits than its factorization.

22204416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22204416 is about 4712.1561943552. The cubic root of 22204416 is about 281.0691099545.

Adding to 22204416 its reverse (61440222), we get a palindrome (83644638).

The spelling of 22204416 in words is "twenty-two million, two hundred four thousand, four hundred sixteen".