22240684 has 6 divisors (see below), whose sum is σ = 38921204. Its totient is φ = 11120340.

The previous prime is 22240681. The next prime is 22240693. The reversal of 22240684 is 48604222.

It is not an unprimeable number, because it can be changed into a prime (22240681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780082 + ... + 2780089.

Almost surely, 2^22240684 is an apocalyptic number.

It is an amenable number.

22240684 is a deficient number, since it is larger than the sum of its proper divisors (16680520).

22240684 is a wasteful number, since it uses less digits than its factorization.

22240684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560175 (or 5560173 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 22240684 is about 4716.0029686165. The cubic root of 22240684 is about 281.2220565489. Note that the first 3 decimals are identical.

Subtracting from 22240684 its sum of digits (28), we obtain a square (22240656 = 4716²).

The spelling of 22240684 in words is "twenty-two million, two hundred forty thousand, six hundred eighty-four".