20039205 has 16 divisors (see below), whose sum is σ = 33750720. Its totient is φ = 10124928.

The previous prime is 20039191. The next prime is 20039207. The reversal of 20039205 is 50293002.

It is not a de Polignac number, because 20039205 - 2⁷ = 20039077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34872 + ... + 35441.

It is an arithmetic number, because the mean of its divisors is an integer number (2109420).

Almost surely, 2^20039205 is an apocalyptic number.

It is an amenable number.

20039205 is a deficient number, since it is larger than the sum of its proper divisors (13711515).

20039205 is a wasteful number, since it uses less digits than its factorization.

20039205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70340.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 20039205 is about 4476.5170612877. The cubic root of 20039205 is about 271.6190104637.

The spelling of 20039205 in words is "twenty million, thirty-nine thousand, two hundred five".