20005367 has 2 divisors, whose sum is σ = 20005368. Its totient is φ = 20005366.

The previous prime is 20005361. The next prime is 20005369. The reversal of 20005367 is 76350002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20005367 - 2⁴ = 20005351 is a prime.

Together with 20005369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20005361) 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, 10002683 + 10002684.

It is an arithmetic number, because the mean of its divisors is an integer number (10002684).

Almost surely, 2^20005367 is an apocalyptic number.

20005367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20005367 is an equidigital number, since it uses as much as digits as its factorization.

20005367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20005367 is about 4472.7359635910. The cubic root of 20005367 is about 271.4660399535.

Adding to 20005367 its reverse (76350002), we get a palindrome (96355369).

The spelling of 20005367 in words is "twenty million, five thousand, three hundred sixty-seven".