22535216 has 80 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 9250560.

The previous prime is 22535209. The next prime is 22535237. The reversal of 22535216 is 61253522.

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 15 ways as a sum of consecutive naturals, for example, 76766 + ... + 77058.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^22535216 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 22535216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26248320).

22535216 is an abundant number, since it is smaller than the sum of its proper divisors (29961424).

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

22535216 is a wasteful number, since it uses less digits than its factorization.

22535216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 348 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 22535216 is about 4747.1271312237. The cubic root of 22535216 is about 282.4580186657.

Adding to 22535216 its reverse (61253522), we get a palindrome (83788738).

The spelling of 22535216 in words is "twenty-two million, five hundred thirty-five thousand, two hundred sixteen".