18112408 has 32 divisors (see below), whose sum is σ = 35704800. Its totient is φ = 8597248.

The previous prime is 18112399. The next prime is 18112441. The reversal of 18112408 is 80421181.

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, 31548 + ... + 32116.

It is an arithmetic number, because the mean of its divisors is an integer number (1115775).

Almost surely, 2^18112408 is an apocalyptic number.

It is an amenable number.

18112408 is a deficient number, since it is larger than the sum of its proper divisors (17592392).

18112408 is a wasteful number, since it uses less digits than its factorization.

18112408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18112408 is about 4255.8674791398. The cubic root of 18112408 is about 262.6185490233.

Adding to 18112408 its reverse (80421181), we get a palindrome (98533589).

The spelling of 18112408 in words is "eighteen million, one hundred twelve thousand, four hundred eight".