20805341 has 2 divisors, whose sum is σ = 20805342. Its totient is φ = 20805340.

The previous prime is 20805329. The next prime is 20805353. The reversal of 20805341 is 14350802.

It is a balanced prime because it is at equal distance from previous prime (20805329) and next prime (20805353).

It can be written as a sum of positive squares in only one way, i.e., 15832441 + 4972900 = 3979^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 20805341 - 2¹⁸ = 20543197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20825341) 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, 10402670 + 10402671.

It is an arithmetic number, because the mean of its divisors is an integer number (10402671).

Almost surely, 2^20805341 is an apocalyptic number.

It is an amenable number.

20805341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20805341 is an equidigital number, since it uses as much as digits as its factorization.

20805341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20805341 is about 4561.2872086726. The cubic root of 20805341 is about 275.0373106401.

The spelling of 20805341 in words is "twenty million, eight hundred five thousand, three hundred forty-one".