20135087 has 8 divisors (see below), whose sum is σ = 23059872. Its totient is φ = 17222400.

The previous prime is 20135069. The next prime is 20135099. The reversal of 20135087 is 78053102.

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

It is a cyclic number.

It is not a de Polignac number, because 20135087 - 2¹⁰ = 20134063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (2882484).

Almost surely, 2^20135087 is an apocalyptic number.

20135087 is a deficient number, since it is larger than the sum of its proper divisors (2924785).

20135087 is an equidigital number, since it uses as much as digits as its factorization.

20135087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 20135087 is about 4487.2137234591. The cubic root of 20135087 is about 272.0515284081.

Adding to 20135087 its reverse (78053102), we get a palindrome (98188189).

The spelling of 20135087 in words is "twenty million, one hundred thirty-five thousand, eighty-seven".