20711241 has 24 divisors (see below), whose sum is σ = 31435040. Its totient is φ = 13474296.

The previous prime is 20711237. The next prime is 20711261. The reversal of 20711241 is 14211702.

It is not a de Polignac number, because 20711241 - 2² = 20711237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711221) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 193510 + ... + 193616.

Almost surely, 2^20711241 is an apocalyptic number.

It is an amenable number.

20711241 is a deficient number, since it is larger than the sum of its proper divisors (10723799).

20711241 is an equidigital number, since it uses as much as digits as its factorization.

20711241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 20711241 is about 4550.9604480813. The cubic root of 20711241 is about 274.6220306062.

Adding to 20711241 its reverse (14211702), we get a palindrome (34922943).

The spelling of 20711241 in words is "twenty million, seven hundred eleven thousand, two hundred forty-one".