22694228 has 6 divisors (see below), whose sum is σ = 39714906. Its totient is φ = 11347112.

The previous prime is 22694219. The next prime is 22694237. The reversal of 22694228 is 82249622.

It is an interprime number because it is at equal distance from previous prime (22694219) and next prime (22694237).

It can be written as a sum of positive squares in only one way, i.e., 20811844 + 1882384 = 4562^2 + 1372^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2836775 + ... + 2836782.

It is an arithmetic number, because the mean of its divisors is an integer number (6619151).

Almost surely, 2^22694228 is an apocalyptic number.

It is an amenable number.

22694228 is a deficient number, since it is larger than the sum of its proper divisors (17020678).

22694228 is a wasteful number, since it uses less digits than its factorization.

22694228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673561 (or 5673559 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 22694228 is about 4763.8459253003. The cubic root of 22694228 is about 283.1208181122.

It can be divided in two parts, 22694 and 228, that added together give a palindrome (22922).

The spelling of 22694228 in words is "twenty-two million, six hundred ninety-four thousand, two hundred twenty-eight".