20408341 has 2 divisors, whose sum is σ = 20408342. Its totient is φ = 20408340.

The previous prime is 20408309. The next prime is 20408357. The reversal of 20408341 is 14380402.

20408341 is nontrivially palindromic in base 15.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 4774225 = 3954^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 20408341 - 2⁵ = 20408309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20408371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10204170 + 10204171.

It is an arithmetic number, because the mean of its divisors is an integer number (10204171).

Almost surely, 2^20408341 is an apocalyptic number.

It is an amenable number.

20408341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20408341 is an equidigital number, since it uses as much as digits as its factorization.

20408341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20408341 is about 4517.5591861092. The cubic root of 20408341 is about 273.2766765708.

Adding to 20408341 its reverse (14380402), we get a palindrome (34788743).

The spelling of 20408341 in words is "twenty million, four hundred eight thousand, three hundred forty-one".