20184494 has 12 divisors (see below), whose sum is σ = 33279792. Its totient is φ = 9174660.

The previous prime is 20184481. The next prime is 20184509. The reversal of 20184494 is 49448102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20184494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41462 + ... + 41945.

It is an arithmetic number, because the mean of its divisors is an integer number (2773316).

Almost surely, 2^20184494 is an apocalyptic number.

20184494 is a deficient number, since it is larger than the sum of its proper divisors (13095298).

20184494 is a wasteful number, since it uses less digits than its factorization.

20184494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83431 (or 83420 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 20184494 is about 4492.7156598209. The cubic root of 20184494 is about 272.2738645203.

The spelling of 20184494 in words is "twenty million, one hundred eighty-four thousand, four hundred ninety-four".