22199644 has 18 divisors (see below), whose sum is σ = 39279800. Its totient is φ = 10977912.

The previous prime is 22199629. The next prime is 22199647. The reversal of 22199644 is 44699122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22199647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111457 + ... + 111655.

Almost surely, 2^22199644 is an apocalyptic number.

It is an amenable number.

22199644 is a deficient number, since it is larger than the sum of its proper divisors (17080156).

22199644 is a wasteful number, since it uses less digits than its factorization.

22199644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 368 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 22199644 is about 4711.6498172084. The cubic root of 22199644 is about 281.0489734512.

The spelling of 22199644 in words is "twenty-two million, one hundred ninety-nine thousand, six hundred forty-four".