22809216 has 32 divisors (see below), whose sum is σ = 60588000. Its totient is φ = 7602944.

The previous prime is 22809209. The next prime is 22809217. The reversal of 22809216 is 61290822.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (22809217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29316 + ... + 30083.

It is an arithmetic number, because the mean of its divisors is an integer number (1893375).

Almost surely, 2^22809216 is an apocalyptic number.

It is an amenable number.

22809216 is an abundant number, since it is smaller than the sum of its proper divisors (37778784).

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

22809216 is an equidigital number, since it uses as much as digits as its factorization.

22809216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59416 (or 59404 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 22809216 is about 4775.8994964300. The cubic root of 22809216 is about 283.5981886342.

The spelling of 22809216 in words is "twenty-two million, eight hundred nine thousand, two hundred sixteen".