22209888 has 96 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 6727680.

The previous prime is 22209877. The next prime is 22209893. The reversal of 22209888 is 88890222.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50373 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^22209888 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 22209888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

22209888 is an abundant number, since it is smaller than the sum of its proper divisors (41656992).

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

22209888 is a wasteful number, since it uses less digits than its factorization.

22209888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 22209888 is about 4712.7367845022. The cubic root of 22209888 is about 281.0921967111.

The spelling of 22209888 in words is "twenty-two million, two hundred nine thousand, eight hundred eighty-eight".