22198764 has 72 divisors (see below), whose sum is σ = 63456960. Its totient is φ = 6005664.

The previous prime is 22198747. The next prime is 22198769. The reversal of 22198764 is 46789122.

It is not an unprimeable number, because it can be changed into a prime (22198769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10179 + ... + 12165.

Almost surely, 2^22198764 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 22198764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31728480).

22198764 is an abundant number, since it is smaller than the sum of its proper divisors (41258196).

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

22198764 is a wasteful number, since it uses less digits than its factorization.

22198764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027 (or 2018 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 22198764 is about 4711.5564307350. The cubic root of 22198764 is about 281.0452597825.

The spelling of 22198764 in words is "twenty-two million, one hundred ninety-eight thousand, seven hundred sixty-four".