22140198 has 24 divisors (see below), whose sum is σ = 48321000. Its totient is φ = 7326144.

The previous prime is 22140121. The next prime is 22140199. The reversal of 22140198 is 89104122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1923 + ... + 6926.

It is an arithmetic number, because the mean of its divisors is an integer number (2013375).

Almost surely, 2^22140198 is an apocalyptic number.

22140198 is an abundant number, since it is smaller than the sum of its proper divisors (26180802).

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

22140198 is a wasteful number, since it uses less digits than its factorization.

22140198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8996 (or 8993 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 22140198 is about 4705.3371823919. The cubic root of 22140198 is about 280.7978857561.

The spelling of 22140198 in words is "twenty-two million, one hundred forty thousand, one hundred ninety-eight".