22240524 has 12 divisors (see below), whose sum is σ = 51894584. Its totient is φ = 7413504.

The previous prime is 22240501. The next prime is 22240553. The reversal of 22240524 is 42504222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22240524.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926677 + ... + 926700.

Almost surely, 2^22240524 is an apocalyptic number.

It is an amenable number.

22240524 is an abundant number, since it is smaller than the sum of its proper divisors (29654060).

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

22240524 is a wasteful number, since it uses less digits than its factorization.

22240524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853384 (or 1853382 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22240524 is about 4715.9860050683. The cubic root of 22240524 is about 281.2213821746.

Adding to 22240524 its reverse (42504222), we get a palindrome (64744746).

The spelling of 22240524 in words is "twenty-two million, two hundred forty thousand, five hundred twenty-four".