20050005 has 16 divisors (see below), whose sum is σ = 32376960. Its totient is φ = 10594368.

The previous prime is 20050003. The next prime is 20050013. The reversal of 20050005 is 50005002.

It is not a de Polignac number, because 20050005 - 2¹ = 20050003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4497 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (2023560).

Almost surely, 2^20050005 is an apocalyptic number.

It is an amenable number.

20050005 is a deficient number, since it is larger than the sum of its proper divisors (12326955).

20050005 is a wasteful number, since it uses less digits than its factorization.

20050005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12380.

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 20050005 is about 4477.7231937671. The cubic root of 20050005 is about 271.6677974702.

Adding to 20050005 its reverse (50005002), we get a palindrome (70055007).

It can be divided in two parts, 200 and 50005, that added together give a palindrome (50205).

The spelling of 20050005 in words is "twenty million, fifty thousand, five".