22198689 has 12 divisors (see below), whose sum is σ = 32383572. Its totient is φ = 14652000.

The previous prime is 22198639. The next prime is 22198699. The reversal of 22198689 is 98689122.

It can be written as a sum of positive squares in 2 ways, for example, as 9000000 + 13198689 = 3000^2 + 3633^2 .

It is not a de Polignac number, because 22198689 - 2¹¹ = 22196641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198639) 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, 11302 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (2698631).

Almost surely, 2^22198689 is an apocalyptic number.

It is an amenable number.

22198689 is a deficient number, since it is larger than the sum of its proper divisors (10184883).

22198689 is a wasteful number, since it uses less digits than its factorization.

22198689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24528 (or 24525 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 22198689 is about 4711.5484715749. The cubic root of 22198689 is about 281.0449432721.

The spelling of 22198689 in words is "twenty-two million, one hundred ninety-eight thousand, six hundred eighty-nine".