22213228 has 6 divisors (see below), whose sum is σ = 38873156. Its totient is φ = 11106612.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213228 is 82231222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22213199 and 22213208.

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 as a sum of consecutive naturals, namely, 2776650 + ... + 2776657.

Almost surely, 2^22213228 is an apocalyptic number.

It is an amenable number.

22213228 is a deficient number, since it is larger than the sum of its proper divisors (16659928).

22213228 is a wasteful number, since it uses less digits than its factorization.

22213228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553311 (or 5553309 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 22213228 is about 4713.0911300335. The cubic root of 22213228 is about 281.1062865447.

The spelling of 22213228 in words is "twenty-two million, two hundred thirteen thousand, two hundred twenty-eight".