22197228 has 24 divisors (see below), whose sum is σ = 51870000. Its totient is φ = 7388160.

The previous prime is 22197193. The next prime is 22197233. The reversal of 22197228 is 82279122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14248 + ... + 15728.

It is an arithmetic number, because the mean of its divisors is an integer number (2161250).

Almost surely, 2^22197228 is an apocalyptic number.

It is an amenable number.

22197228 is an abundant number, since it is smaller than the sum of its proper divisors (29672772).

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

22197228 is a wasteful number, since it uses less digits than its factorization.

22197228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2735 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 22197228 is about 4711.3934244552. The cubic root of 22197228 is about 281.0387775076.

The spelling of 22197228 in words is "twenty-two million, one hundred ninety-seven thousand, two hundred twenty-eight".