22194844 has 30 divisors (see below), whose sum is σ = 45331384. Its totient is φ = 9507960.

The previous prime is 22194829. The next prime is 22194859. The reversal of 22194844 is 44849122.

It is an interprime number because it is at equal distance from previous prime (22194829) and next prime (22194859).

It is a super-2 number, since 2×22194844² = 985222200368672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8449 + ... + 10759.

Almost surely, 2^22194844 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 22194844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22665692).

22194844 is an abundant number, since it is smaller than the sum of its proper divisors (23136540).

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

22194844 is an equidigital number, since it uses as much as digits as its factorization.

22194844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2320 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 22194844 is about 4711.1404139550. The cubic root of 22194844 is about 281.0287158844.

The spelling of 22194844 in words is "twenty-two million, one hundred ninety-four thousand, eight hundred forty-four".