20184868 has 12 divisors (see below), whose sum is σ = 38534832. Its totient is φ = 9174920.

The previous prime is 20184863. The next prime is 20184877. The reversal of 20184868 is 86848102.

It is not an unprimeable number, because it can be changed into a prime (20184863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229330 + ... + 229417.

It is an arithmetic number, because the mean of its divisors is an integer number (3211236).

Almost surely, 2^20184868 is an apocalyptic number.

It is an amenable number.

20184868 is a deficient number, since it is larger than the sum of its proper divisors (18349964).

20184868 is a wasteful number, since it uses less digits than its factorization.

20184868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458762 (or 458760 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 20184868 is about 4492.7572825605. The cubic root of 20184868 is about 272.2755461709.

It can be divided in two parts, 2018 and 4868, that added together give a palindrome (6886).

The spelling of 20184868 in words is "twenty million, one hundred eighty-four thousand, eight hundred sixty-eight".