22200404 has 18 divisors (see below), whose sum is σ = 39315150. Its totient is φ = 10968576.

The previous prime is 22200397. The next prime is 22200421. The reversal of 22200404 is 40400222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 204304 + 21996100 = 452^2 + 4690^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114932 + ... + 115124.

It is an arithmetic number, because the mean of its divisors is an integer number (2184175).

Almost surely, 2^22200404 is an apocalyptic number.

It is an amenable number.

22200404 is a deficient number, since it is larger than the sum of its proper divisors (17114746).

22200404 is a wasteful number, since it uses less digits than its factorization.

22200404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22200404 is about 4711.7304676732. The cubic root of 22200404 is about 281.0521806315.

Adding to 22200404 its reverse (40400222), we get a palindrome (62600626).

The spelling of 22200404 in words is "twenty-two million, two hundred thousand, four hundred four".