22012404 has 24 divisors (see below), whose sum is σ = 51894528. Its totient is φ = 7261440.

The previous prime is 22012391. The next prime is 22012411. The reversal of 22012404 is 40421022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8292 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (2162272).

Almost surely, 2^22012404 is an apocalyptic number.

It is an amenable number.

22012404 is an abundant number, since it is smaller than the sum of its proper divisors (29882124).

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

22012404 is a wasteful number, since it uses less digits than its factorization.

22012404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19015 (or 19013 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22012404 is about 4691.7378443387. The cubic root of 22012404 is about 280.2565845289.

Adding to 22012404 its reverse (40421022), we get a palindrome (62433426).

The spelling of 22012404 in words is "twenty-two million, twelve thousand, four hundred four".