20436041 has 2 divisors, whose sum is σ = 20436042. Its totient is φ = 20436040.

The previous prime is 20436019. The next prime is 20436047. The reversal of 20436041 is 14063402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17808400 + 2627641 = 4220^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 20436041 - 2⁶ = 20435977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20436047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218020 + 10218021.

It is an arithmetic number, because the mean of its divisors is an integer number (10218021).

Almost surely, 2^20436041 is an apocalyptic number.

It is an amenable number.

20436041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20436041 is an equidigital number, since it uses as much as digits as its factorization.

20436041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20436041 is about 4520.6239613575. The cubic root of 20436041 is about 273.4002590762.

Adding to 20436041 its reverse (14063402), we get a palindrome (34499443).

The spelling of 20436041 in words is "twenty million, four hundred thirty-six thousand, forty-one".