22553616 has 80 divisors (see below), whose sum is σ = 62853120. Its totient is φ = 6948480.

The previous prime is 22553563. The next prime is 22553621. The reversal of 22553616 is 61635522.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33895 + ... + 34553.

It is an arithmetic number, because the mean of its divisors is an integer number (785664).

Almost surely, 2^22553616 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 22553616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31426560).

22553616 is an abundant number, since it is smaller than the sum of its proper divisors (40299504).

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

22553616 is a wasteful number, since it uses less digits than its factorization.

22553616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 718 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 22553616 is about 4749.0647500324. The cubic root of 22553616 is about 282.5348733934.

The spelling of 22553616 in words is "twenty-two million, five hundred fifty-three thousand, six hundred sixteen".