28164107 has 2 divisors, whose sum is σ = 28164108. Its totient is φ = 28164106.

The previous prime is 28164091. The next prime is 28164113. The reversal of 28164107 is 70146182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28164107 - 2⁴ = 28164091 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28164107.

It is not a weakly prime, because it can be changed into another prime (28164197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14082053 + 14082054.

It is an arithmetic number, because the mean of its divisors is an integer number (14082054).

Almost surely, 2^28164107 is an apocalyptic number.

28164107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28164107 is an equidigital number, since it uses as much as digits as its factorization.

28164107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28164107 is about 5306.9866214265. The cubic root of 28164107 is about 304.2509866019.

It can be divided in two parts, 28 and 164107, that multiplied together give a triangular number (4594996 = T₃₀₃₁).

The spelling of 28164107 in words is "twenty-eight million, one hundred sixty-four thousand, one hundred seven".