28938167 has 2 divisors, whose sum is σ = 28938168. Its totient is φ = 28938166.

The previous prime is 28938157. The next prime is 28938179. The reversal of 28938167 is 76183982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28938167 - 2⁶ = 28938103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28938137) 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, 14469083 + 14469084.

It is an arithmetic number, because the mean of its divisors is an integer number (14469084).

Almost surely, 2^28938167 is an apocalyptic number.

28938167 is a deficient number, since it is larger than the sum of its proper divisors (1).

28938167 is an equidigital number, since it uses as much as digits as its factorization.

28938167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 28938167 is about 5379.4206937179. The cubic root of 28938167 is about 307.0131702202.

The spelling of 28938167 in words is "twenty-eight million, nine hundred thirty-eight thousand, one hundred sixty-seven".