22816228 has 6 divisors (see below), whose sum is σ = 39928406. Its totient is φ = 11408112.

The previous prime is 22816201. The next prime is 22816231. The reversal of 22816228 is 82261822.

It can be written as a sum of positive squares in only one way, i.e., 21233664 + 1582564 = 4608^2 + 1258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22816228.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2852025 + ... + 2852032.

Almost surely, 2^22816228 is an apocalyptic number.

It is an amenable number.

22816228 is a deficient number, since it is larger than the sum of its proper divisors (17112178).

22816228 is a wasteful number, since it uses less digits than its factorization.

22816228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704061 (or 5704059 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 22816228 is about 4776.6335425695. The cubic root of 22816228 is about 283.6272468704.

The spelling of 22816228 in words is "twenty-two million, eight hundred sixteen thousand, two hundred twenty-eight".