22189188 has 48 divisors (see below), whose sum is σ = 62289920. Its totient is φ = 6005664.

The previous prime is 22189151. The next prime is 22189201. The reversal of 22189188 is 88198122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5356 + ... + 8547.

Almost surely, 2^22189188 is an apocalyptic number.

22189188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22189188 is an abundant number, since it is smaller than the sum of its proper divisors (40100732).

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

22189188 is a wasteful number, since it uses less digits than its factorization.

22189188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13936 (or 13934 counting only the distinct ones).

The product of its digits is 18432, while the sum is 39.

The square root of 22189188 is about 4710.5400964221. The cubic root of 22189188 is about 281.0048419694.

The spelling of 22189188 in words is "twenty-two million, one hundred eighty-nine thousand, one hundred eighty-eight".