22540204 has 6 divisors (see below), whose sum is σ = 39445364. Its totient is φ = 11270100.

The previous prime is 22540169. The next prime is 22540237. The reversal of 22540204 is 40204522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2817522 + ... + 2817529.

Almost surely, 2^22540204 is an apocalyptic number.

It is an amenable number.

22540204 is a deficient number, since it is larger than the sum of its proper divisors (16905160).

22540204 is a wasteful number, since it uses less digits than its factorization.

22540204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635055 (or 5635053 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22540204 is about 4747.6524725384. The cubic root of 22540204 is about 282.4788571119.

Adding to 22540204 its reverse (40204522), we get a palindrome (62744726).

The spelling of 22540204 in words is "twenty-two million, five hundred forty thousand, two hundred four".