20135827 has 2 divisors, whose sum is σ = 20135828. Its totient is φ = 20135826.

The previous prime is 20135821. The next prime is 20135867. The reversal of 20135827 is 72853102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20135827 - 2¹¹ = 20133779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20135795 and 20135804.

It is not a weakly prime, because it can be changed into another prime (20135821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067913 + 10067914.

It is an arithmetic number, because the mean of its divisors is an integer number (10067914).

Almost surely, 2^20135827 is an apocalyptic number.

20135827 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135827 is an equidigital number, since it uses as much as digits as its factorization.

20135827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20135827 is about 4487.2961792153. The cubic root of 20135827 is about 272.0548611586.

Adding to 20135827 its reverse (72853102), we get a palindrome (92988929).

The spelling of 20135827 in words is "twenty million, one hundred thirty-five thousand, eight hundred twenty-seven".