22065228 has 18 divisors (see below), whose sum is σ = 55776084. Its totient is φ = 7355064.

The previous prime is 22065223. The next prime is 22065293. The reversal of 22065228 is 82256022.

22065228 is a `hidden beast` number, since 2 + 2 + 0 + 652 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (22065221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306426 + ... + 306497.

Almost surely, 2^22065228 is an apocalyptic number.

It is an amenable number.

22065228 is an abundant number, since it is smaller than the sum of its proper divisors (33710856).

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

22065228 is a wasteful number, since it uses less digits than its factorization.

22065228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612933 (or 612928 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22065228 is about 4697.3639416166. The cubic root of 22065228 is about 280.4805862244.

The spelling of 22065228 in words is "twenty-two million, sixty-five thousand, two hundred twenty-eight".