18802868 has 72 divisors (see below), whose sum is σ = 41291712. Its totient is φ = 7451136.

The previous prime is 18802853. The next prime is 18802871. The reversal of 18802868 is 86820881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193796 + ... + 193892.

It is an arithmetic number, because the mean of its divisors is an integer number (573496).

Almost surely, 2^18802868 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 18802868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20645856).

18802868 is an abundant number, since it is smaller than the sum of its proper divisors (22488844).

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

18802868 is a wasteful number, since it uses less digits than its factorization.

18802868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 18802868 is about 4336.2273925614. The cubic root of 18802868 is about 265.9140996867.

The spelling of 18802868 in words is "eighteen million, eight hundred two thousand, eight hundred sixty-eight".