18404108 has 12 divisors (see below), whose sum is σ = 32263560. Its totient is φ = 9185952.

The previous prime is 18404083. The next prime is 18404137. The reversal of 18404108 is 80140481.

It is a super-2 number, since 2×18404108² = 677422382551328, which contains 22 as substring.

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, 1241 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (2688630).

Almost surely, 2^18404108 is an apocalyptic number.

It is an amenable number.

18404108 is a deficient number, since it is larger than the sum of its proper divisors (13859452).

18404108 is a wasteful number, since it uses less digits than its factorization.

18404108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8056 (or 8054 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18404108 is about 4290.0009324008. Note that the first 3 decimals coincide. The cubic root of 18404108 is about 264.0208699449.

Adding to 18404108 its reverse (80140481), we get a palindrome (98544589).

The spelling of 18404108 in words is "eighteen million, four hundred four thousand, one hundred eight".