22289228 has 12 divisors (see below), whose sum is σ = 42006720. Its totient is φ = 10287312.

The previous prime is 22289219. The next prime is 22289237. The reversal of 22289228 is 82298222.

It is an interprime number because it is at equal distance from previous prime (22289219) and next prime (22289237).

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 3 ways as a sum of consecutive naturals, for example, 214268 + ... + 214371.

It is an arithmetic number, because the mean of its divisors is an integer number (3500560).

Almost surely, 2^22289228 is an apocalyptic number.

It is an amenable number.

22289228 is a deficient number, since it is larger than the sum of its proper divisors (19717492).

22289228 is a wasteful number, since it uses less digits than its factorization.

22289228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428656 (or 428654 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 22289228 is about 4721.1468945586. The cubic root of 22289228 is about 281.4265125391.

The spelling of 22289228 in words is "twenty-two million, two hundred eighty-nine thousand, two hundred twenty-eight".