20084045 has 16 divisors (see below), whose sum is σ = 25544640. Its totient is φ = 15116544.

The previous prime is 20084039. The next prime is 20084047. The reversal of 20084045 is 54048002.

It is a cyclic number.

It is not a de Polignac number, because 20084045 - 2⁶ = 20083981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20084045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084047) 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 15 ways as a sum of consecutive naturals, for example, 14837 + ... + 16133.

It is an arithmetic number, because the mean of its divisors is an integer number (1596540).

Almost surely, 2^20084045 is an apocalyptic number.

It is an amenable number.

20084045 is a deficient number, since it is larger than the sum of its proper divisors (5460595).

20084045 is a wasteful number, since it uses less digits than its factorization.

20084045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 20084045 is about 4481.5226207172. The cubic root of 20084045 is about 271.8214523510.

The spelling of 20084045 in words is "twenty million, eighty-four thousand, forty-five".