22449228 has 24 divisors (see below), whose sum is σ = 52487232. Its totient is φ = 7467984.

The previous prime is 22449209. The next prime is 22449233. The reversal of 22449228 is 82294422.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 5451 + ... + 8637.

It is an arithmetic number, because the mean of its divisors is an integer number (2186968).

Almost surely, 2^22449228 is an apocalyptic number.

It is an amenable number.

22449228 is an abundant number, since it is smaller than the sum of its proper divisors (30038004).

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

22449228 is a wasteful number, since it uses less digits than its factorization.

22449228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781 (or 3779 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 22449228 is about 4738.0616289787. The cubic root of 22449228 is about 282.0983008237.

The spelling of 22449228 in words is "twenty-two million, four hundred forty-nine thousand, two hundred twenty-eight".