22818228 has 12 divisors (see below), whose sum is σ = 53242560. Its totient is φ = 7606072.

The previous prime is 22818227. The next prime is 22818241. The reversal of 22818228 is 82281822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22818227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 950748 + ... + 950771.

It is an arithmetic number, because the mean of its divisors is an integer number (4436880).

Almost surely, 2^22818228 is an apocalyptic number.

It is an amenable number.

22818228 is an abundant number, since it is smaller than the sum of its proper divisors (30424332).

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

22818228 is a wasteful number, since it uses less digits than its factorization.

22818228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901526 (or 1901524 counting only the distinct ones).

The product of its digits is 8192, while the sum is 33.

The square root of 22818228 is about 4776.8428904455. The cubic root of 22818228 is about 283.6355339241.

The spelling of 22818228 in words is "twenty-two million, eight hundred eighteen thousand, two hundred twenty-eight".