22556416 has 72 divisors (see below), whose sum is σ = 49006944. Its totient is φ = 10321920.

The previous prime is 22556411. The next prime is 22556419. The reversal of 22556416 is 61465522.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22556411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308956 + ... + 309028.

It is an arithmetic number, because the mean of its divisors is an integer number (680652).

Almost surely, 2^22556416 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 22556416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24503472).

22556416 is an abundant number, since it is smaller than the sum of its proper divisors (26450528).

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

22556416 is an equidigital number, since it uses as much as digits as its factorization.

22556416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 163 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 22556416 is about 4749.3595357690. The cubic root of 22556416 is about 282.5465650132.

The spelling of 22556416 in words is "twenty-two million, five hundred fifty-six thousand, four hundred sixteen".