20328167 has 2 divisors, whose sum is σ = 20328168. Its totient is φ = 20328166.

The previous prime is 20328163. The next prime is 20328221. The reversal of 20328167 is 76182302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20328167 - 2² = 20328163 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20328163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10164083 + 10164084.

It is an arithmetic number, because the mean of its divisors is an integer number (10164084).

Almost surely, 2^20328167 is an apocalyptic number.

20328167 is a deficient number, since it is larger than the sum of its proper divisors (1).

20328167 is an equidigital number, since it uses as much as digits as its factorization.

20328167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20328167 is about 4508.6768569060. The cubic root of 20328167 is about 272.9183518753.

The spelling of 20328167 in words is "twenty million, three hundred twenty-eight thousand, one hundred sixty-seven".