20354135 has 8 divisors (see below), whose sum is σ = 25213056. Its totient is φ = 15757920.

The previous prime is 20354129. The next prime is 20354153. The reversal of 20354135 is 53145302.

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

It is not a de Polignac number, because 20354135 - 2⁴ = 20354119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20354135.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65504 + ... + 65813.

It is an arithmetic number, because the mean of its divisors is an integer number (3151632).

Almost surely, 2^20354135 is an apocalyptic number.

20354135 is a deficient number, since it is larger than the sum of its proper divisors (4858921).

20354135 is a wasteful number, since it uses less digits than its factorization.

20354135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131353.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20354135 is about 4511.5557183748. Note that the first 3 decimals coincide. The cubic root of 20354135 is about 273.0345146378.

Adding to 20354135 its reverse (53145302), we get a palindrome (73499437).

The spelling of 20354135 in words is "twenty million, three hundred fifty-four thousand, one hundred thirty-five".