18008888 has 8 divisors (see below), whose sum is σ = 33766680. Its totient is φ = 9004440.

The previous prime is 18008869. The next prime is 18008911. The reversal of 18008888 is 88880081.

It is a tau number, because it is divible by the number of its divisors (8).

18008888 is a modest number, since divided by 8888 gives 1800 as remainder.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1125548 + ... + 1125563.

It is an arithmetic number, because the mean of its divisors is an integer number (4220835).

Almost surely, 2^18008888 is an apocalyptic number.

It is an amenable number.

18008888 is a deficient number, since it is larger than the sum of its proper divisors (15757792).

18008888 is a wasteful number, since it uses less digits than its factorization.

18008888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251117 (or 2251113 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 41.

The square root of 18008888 is about 4243.6880186932. The cubic root of 18008888 is about 262.1172677851.

The spelling of 18008888 in words is "eighteen million, eight thousand, eight hundred eighty-eight".