22005404 has 6 divisors (see below), whose sum is σ = 38509464. Its totient is φ = 11002700.

The previous prime is 22005383. The next prime is 22005419. The reversal of 22005404 is 40450022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750672 + ... + 2750679.

It is an arithmetic number, because the mean of its divisors is an integer number (6418244).

Almost surely, 2^22005404 is an apocalyptic number.

It is an amenable number.

22005404 is a deficient number, since it is larger than the sum of its proper divisors (16504060).

22005404 is a wasteful number, since it uses less digits than its factorization.

22005404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5501355 (or 5501353 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22005404 is about 4690.9917927875. The cubic root of 22005404 is about 280.2268739457.

Adding to 22005404 its reverse (40450022), we get a palindrome (62455426).

The spelling of 22005404 in words is "twenty-two million, five thousand, four hundred four".