18805008 has 40 divisors (see below), whose sum is σ = 49023648. Its totient is φ = 6211072.

The previous prime is 18804997. The next prime is 18805013. The reversal of 18805008 is 80050881.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3691 + ... + 7157.

Almost surely, 2^18805008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18805008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24511824).

18805008 is an abundant number, since it is smaller than the sum of its proper divisors (30218640).

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

18805008 is a wasteful number, since it uses less digits than its factorization.

18805008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591 (or 3585 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 18805008 is about 4336.4741438178. The cubic root of 18805008 is about 265.9241874135.

Adding to 18805008 its reverse (80050881), we get a palindrome (98855889).

The spelling of 18805008 in words is "eighteen million, eight hundred five thousand, eight".