22055684 has 36 divisors (see below), whose sum is σ = 45294480. Its totient is φ = 9369360.

The previous prime is 22055669. The next prime is 22055687. The reversal of 22055684 is 48655022.

It is a self number, because there is not a number n which added to its sum of digits gives 22055684.

It is not an unprimeable number, because it can be changed into a prime (22055687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25247 + ... + 26105.

It is an arithmetic number, because the mean of its divisors is an integer number (1258180).

Almost surely, 2^22055684 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 22055684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22647240).

22055684 is an abundant number, since it is smaller than the sum of its proper divisors (23238796).

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

22055684 is a wasteful number, since it uses less digits than its factorization.

22055684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 22055684 is about 4696.3479428168. The cubic root of 22055684 is about 280.4401410987.

The spelling of 22055684 in words is "twenty-two million, fifty-five thousand, six hundred eighty-four".