22228292 has 6 divisors (see below), whose sum is σ = 38899518. Its totient is φ = 11114144.

The previous prime is 22228289. The next prime is 22228301. The reversal of 22228292 is 29282222.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 3444736 = 4334^2 + 1856^2 .

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, 2778533 + ... + 2778540.

It is an arithmetic number, because the mean of its divisors is an integer number (6483253).

Almost surely, 2^22228292 is an apocalyptic number.

It is an amenable number.

22228292 is a deficient number, since it is larger than the sum of its proper divisors (16671226).

22228292 is a wasteful number, since it uses less digits than its factorization.

22228292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557077 (or 5557075 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 22228292 is about 4714.6889611087. The cubic root of 22228292 is about 281.1698166813.

The spelling of 22228292 in words is "twenty-two million, two hundred twenty-eight thousand, two hundred ninety-two".