22185198 has 64 divisors (see below), whose sum is σ = 59328000. Its totient is φ = 6003072.

The previous prime is 22185197. The next prime is 22185227. The reversal of 22185198 is 89158122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22185193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5638 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (927000).

Almost surely, 2^22185198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22185198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29664000).

22185198 is an abundant number, since it is smaller than the sum of its proper divisors (37142802).

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

22185198 is a wasteful number, since it uses less digits than its factorization.

22185198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3120 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 22185198 is about 4710.1165590673. The cubic root of 22185198 is about 280.9879977819.

The spelling of 22185198 in words is "twenty-two million, one hundred eighty-five thousand, one hundred ninety-eight".