20084518 has 8 divisors (see below), whose sum is σ = 30247560. Its totient is φ = 10002000.

The previous prime is 20084513. The next prime is 20084549. The reversal of 20084518 is 81548002.

It is a sphenic number, since it is the product of 3 distinct primes.

20084518 is a modest number, since divided by 4518 gives 2008 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19503 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (3780945).

Almost surely, 2^20084518 is an apocalyptic number.

20084518 is a deficient number, since it is larger than the sum of its proper divisors (10163042).

20084518 is a wasteful number, since it uses less digits than its factorization.

20084518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40262.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 20084518 is about 4481.5753926493. The cubic root of 20084518 is about 271.8235862262.

It can be divided in two parts, 20084 and 518, that added together give a palindrome (20602).

The spelling of 20084518 in words is "twenty million, eighty-four thousand, five hundred eighteen".