18008802 has 48 divisors (see below), whose sum is σ = 45556992. Its totient is φ = 5034240.

The previous prime is 18008801. The next prime is 18008819. The reversal of 18008802 is 20880081.

It is not an unprimeable number, because it can be changed into a prime (18008801) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4402 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (949104).

Almost surely, 2^18008802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18008802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22778496).

18008802 is an abundant number, since it is smaller than the sum of its proper divisors (27548190).

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

18008802 is a wasteful number, since it uses less digits than its factorization.

18008802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 18008802 is about 4243.6778859852. The cubic root of 18008802 is about 262.1168505445.

Adding to 18008802 its reverse (20880081), we get a palindrome (38888883).

The spelling of 18008802 in words is "eighteen million, eight thousand, eight hundred two".