22028312 has 16 divisors (see below), whose sum is σ = 41730360. Its totient is φ = 10900224.

The previous prime is 22028297. The next prime is 22028317. The reversal of 22028312 is 21382022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22028317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13418 + ... + 14969.

Almost surely, 2^22028312 is an apocalyptic number.

It is an amenable number.

22028312 is a deficient number, since it is larger than the sum of its proper divisors (19702048).

22028312 is a wasteful number, since it uses less digits than its factorization.

22028312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490 (or 28486 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 22028312 is about 4693.4328587932. The cubic root of 22028312 is about 280.3240805369.

The spelling of 22028312 in words is "twenty-two million, twenty-eight thousand, three hundred twelve".