20730167 has 2 divisors, whose sum is σ = 20730168. Its totient is φ = 20730166.

The previous prime is 20730131. The next prime is 20730173. The reversal of 20730167 is 76103702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20730167 - 2²² = 16535863 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 (20730187) 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, 10365083 + 10365084.

It is an arithmetic number, because the mean of its divisors is an integer number (10365084).

Almost surely, 2^20730167 is an apocalyptic number.

20730167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20730167 is an equidigital number, since it uses as much as digits as its factorization.

20730167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 20730167 is about 4553.0393145678. The cubic root of 20730167 is about 274.7056553102.

Adding to 20730167 its reverse (76103702), we get a palindrome (96833869).

The spelling of 20730167 in words is "twenty million, seven hundred thirty thousand, one hundred sixty-seven".