22185888 has 48 divisors (see below), whose sum is σ = 59240160. Its totient is φ = 7268096.

The previous prime is 22185851. The next prime is 22185907. The reversal of 22185888 is 88858122.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3706 + ... + 7622.

It is an arithmetic number, because the mean of its divisors is an integer number (1234170).

Almost surely, 2^22185888 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 22185888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29620080).

22185888 is an abundant number, since it is smaller than the sum of its proper divisors (37054272).

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

22185888 is a wasteful number, since it uses less digits than its factorization.

22185888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989 (or 3981 counting only the distinct ones).

The product of its digits is 81920, while the sum is 42.

The square root of 22185888 is about 4710.1898050928. The cubic root of 22185888 is about 280.9909108309.

The spelling of 22185888 in words is "twenty-two million, one hundred eighty-five thousand, eight hundred eighty-eight".