20708141 has 2 divisors, whose sum is σ = 20708142. Its totient is φ = 20708140.

The previous prime is 20708137. The next prime is 20708179. The reversal of 20708141 is 14180702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20666116 + 42025 = 4546^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 20708141 - 2² = 20708137 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20708101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10354070 + 10354071.

It is an arithmetic number, because the mean of its divisors is an integer number (10354071).

Almost surely, 2^20708141 is an apocalyptic number.

It is an amenable number.

20708141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20708141 is an equidigital number, since it uses as much as digits as its factorization.

20708141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 20708141 is about 4550.6198478889. The cubic root of 20708141 is about 274.6083283728.

Adding to 20708141 its reverse (14180702), we get a palindrome (34888843).

The spelling of 20708141 in words is "twenty million, seven hundred eight thousand, one hundred forty-one".