22394438 has 24 divisors (see below), whose sum is σ = 38208240. Its totient is φ = 9825200.

The previous prime is 22394413. The next prime is 22394441. The reversal of 22394438 is 83449322.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22394398 and 22394407.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5423 + ... + 8613.

It is an arithmetic number, because the mean of its divisors is an integer number (1592010).

Almost surely, 2^22394438 is an apocalyptic number.

22394438 is a deficient number, since it is larger than the sum of its proper divisors (15813802).

22394438 is a wasteful number, since it uses less digits than its factorization.

22394438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244 (or 3233 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 22394438 is about 4732.2761965042. The cubic root of 22394438 is about 281.8686157586.

The spelling of 22394438 in words is "twenty-two million, three hundred ninety-four thousand, four hundred thirty-eight".