22040404 has 6 divisors (see below), whose sum is σ = 38570714. Its totient is φ = 11020200.

The previous prime is 22040393. The next prime is 22040429. The reversal of 22040404 is 40404022.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 2220100 = 4452^2 + 1490^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755047 + ... + 2755054.

Almost surely, 2^22040404 is an apocalyptic number.

It is an amenable number.

22040404 is a deficient number, since it is larger than the sum of its proper divisors (16530310).

22040404 is a wasteful number, since it uses less digits than its factorization.

22040404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510105 (or 5510103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22040404 is about 4694.7208649716. The cubic root of 22040404 is about 280.3753639147.

Adding to 22040404 its reverse (40404022), we get a palindrome (62444426).

The spelling of 22040404 in words is "twenty-two million, forty thousand, four hundred four".