22228788 has 24 divisors (see below), whose sum is σ = 52002720. Its totient is φ = 7390240.

The previous prime is 22228777. The next prime is 22228793. The reversal of 22228788 is 88782222.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 2818 + ... + 7238.

It is an arithmetic number, because the mean of its divisors is an integer number (2166780).

Almost surely, 2^22228788 is an apocalyptic number.

It is an amenable number.

22228788 is an abundant number, since it is smaller than the sum of its proper divisors (29773932).

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

22228788 is a wasteful number, since it uses less digits than its factorization.

22228788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847 (or 4845 counting only the distinct ones).

The product of its digits is 57344, while the sum is 39.

The square root of 22228788 is about 4714.7415623765. The cubic root of 22228788 is about 281.1719079980.

It can be divided in two parts, 2222878 and 8, that added together give a triangular number (2222886 = T₂₁₀₈).

The spelling of 22228788 in words is "twenty-two million, two hundred twenty-eight thousand, seven hundred eighty-eight".