20080135 has 4 divisors (see below), whose sum is σ = 24096168. Its totient is φ = 16064104.

The previous prime is 20080129. The next prime is 20080147. The reversal of 20080135 is 53108002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20080135 - 2⁵ = 20080103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2008009 + ... + 2008018.

It is an arithmetic number, because the mean of its divisors is an integer number (6024042).

Almost surely, 2^20080135 is an apocalyptic number.

20080135 is a deficient number, since it is larger than the sum of its proper divisors (4016033).

20080135 is an equidigital number, since it uses as much as digits as its factorization.

20080135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016032.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20080135 is about 4481.0863638185. The cubic root of 20080135 is about 271.8038116341.

Adding to 20080135 its reverse (53108002), we get a palindrome (73188137).

The spelling of 20080135 in words is "twenty million, eighty thousand, one hundred thirty-five".