22199438 has 16 divisors (see below), whose sum is σ = 34228656. Its totient is φ = 10792320.

The previous prime is 22199431. The next prime is 22199479. The reversal of 22199438 is 83499122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22199431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24758 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (2139291).

Almost surely, 2^22199438 is an apocalyptic number.

22199438 is a deficient number, since it is larger than the sum of its proper divisors (12029218).

22199438 is a wasteful number, since it uses less digits than its factorization.

22199438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its digits is 31104, while the sum is 38.

The square root of 22199438 is about 4711.6279564499. The cubic root of 22199438 is about 281.0481041239.

The spelling of 22199438 in words is "twenty-two million, one hundred ninety-nine thousand, four hundred thirty-eight".