22713228 has 36 divisors (see below), whose sum is σ = 58360848. Its totient is φ = 7446240.

The previous prime is 22713217. The next prime is 22713233. The reversal of 22713228 is 82231722.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2976 + ... + 7367.

Almost surely, 2^22713228 is an apocalyptic number.

It is an amenable number.

22713228 is an abundant number, since it is smaller than the sum of its proper divisors (35647620).

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

22713228 is a wasteful number, since it uses less digits than its factorization.

22713228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414 (or 10409 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 22713228 is about 4765.8396951639. The cubic root of 22713228 is about 283.1998072870.

The spelling of 22713228 in words is "twenty-two million, seven hundred thirteen thousand, two hundred twenty-eight".