18108208 has 10 divisors (see below), whose sum is σ = 35084684. Its totient is φ = 9054096.

The previous prime is 18108173. The next prime is 18108217. The reversal of 18108208 is 80280181.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565866 + ... + 565897.

Almost surely, 2^18108208 is an apocalyptic number.

It is an amenable number.

18108208 is a deficient number, since it is larger than the sum of its proper divisors (16976476).

18108208 is a wasteful number, since it uses less digits than its factorization.

18108208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131771 (or 1131765 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 18108208 is about 4255.3740141144. The cubic root of 18108208 is about 262.5982483327.

Adding to 18108208 its reverse (80280181), we get a palindrome (98388389).

The spelling of 18108208 in words is "eighteen million, one hundred eight thousand, two hundred eight".