22687216 has 40 divisors (see below), whose sum is σ = 47544080. Its totient is φ = 10450944.

The previous prime is 22687201. The next prime is 22687219. The reversal of 22687216 is 61278622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22687219) 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 7 ways as a sum of consecutive naturals, for example, 10240 + ... + 12256.

It is an arithmetic number, because the mean of its divisors is an integer number (1188602).

Almost surely, 2^22687216 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 22687216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23772040).

22687216 is an abundant number, since it is smaller than the sum of its proper divisors (24856864).

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

22687216 is a wasteful number, since it uses less digits than its factorization.

22687216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2075 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 22687216 is about 4763.1099084527. The cubic root of 22687216 is about 283.0916558119.

The spelling of 22687216 in words is "twenty-two million, six hundred eighty-seven thousand, two hundred sixteen".