20741135 has 4 divisors (see below), whose sum is σ = 24889368. Its totient is φ = 16592904.

The previous prime is 20741129. The next prime is 20741153. The reversal of 20741135 is 53114702.

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 20741135 - 2¹² = 20737039 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 20741135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074109 + ... + 2074118.

It is an arithmetic number, because the mean of its divisors is an integer number (6222342).

Almost surely, 2^20741135 is an apocalyptic number.

20741135 is a deficient number, since it is larger than the sum of its proper divisors (4148233).

20741135 is an equidigital number, since it uses as much as digits as its factorization.

20741135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148232.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20741135 is about 4554.2436254553. The cubic root of 20741135 is about 274.7540942255.

Adding to 20741135 its reverse (53114702), we get a palindrome (73855837).

The spelling of 20741135 in words is "twenty million, seven hundred forty-one thousand, one hundred thirty-five".