22198372 has 36 divisors (see below), whose sum is σ = 46426044. Its totient is φ = 9253440.

The previous prime is 22198367. The next prime is 22198391. The reversal of 22198372 is 27389122.

It can be written as a sum of positive squares in 2 ways, for example, as 20575296 + 1623076 = 4536^2 + 1274^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5722 + ... + 8782.

Almost surely, 2^22198372 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 22198372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23213022).

22198372 is an abundant number, since it is smaller than the sum of its proper divisors (24227672).

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

22198372 is a wasteful number, since it uses less digits than its factorization.

22198372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 3107 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 22198372 is about 4711.5148307100. The cubic root of 22198372 is about 281.0436054804.

The spelling of 22198372 in words is "twenty-two million, one hundred ninety-eight thousand, three hundred seventy-two".