22404036 has 12 divisors (see below), whose sum is σ = 52276112. Its totient is φ = 7468008.

The previous prime is 22403987. The next prime is 22404061. The reversal of 22404036 is 63040422.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933490 + ... + 933513.

Almost surely, 2^22404036 is an apocalyptic number.

It is an amenable number.

22404036 is an abundant number, since it is smaller than the sum of its proper divisors (29872076).

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

22404036 is a wasteful number, since it uses less digits than its factorization.

22404036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867010 (or 1867008 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22404036 is about 4733.2901875968. The cubic root of 22404036 is about 281.9088785621.

Adding to 22404036 its reverse (63040422), we get a palindrome (85444458).

The spelling of 22404036 in words is "twenty-two million, four hundred four thousand, thirty-six".