22104288 has 144 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 6800640.

The previous prime is 22104283. The next prime is 22104317. The reversal of 22104288 is 88240122.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22104283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311293 + ... + 311363.

It is an arithmetic number, because the mean of its divisors is an integer number (471744).

Almost surely, 2^22104288 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 22104288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33965568).

22104288 is an abundant number, since it is smaller than the sum of its proper divisors (45826848).

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

22104288 is a wasteful number, since it uses less digits than its factorization.

22104288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 22104288 is about 4701.5197542922. The cubic root of 22104288 is about 280.6459914721.

The spelling of 22104288 in words is "twenty-two million, one hundred four thousand, two hundred eighty-eight".