28394027 has 2 divisors, whose sum is σ = 28394028. Its totient is φ = 28394026.

The previous prime is 28393993. The next prime is 28394033. The reversal of 28394027 is 72049382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28394027 - 2¹⁰ = 28393003 is a prime.

It is not a weakly prime, because it can be changed into another prime (28394077) 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, 14197013 + 14197014.

It is an arithmetic number, because the mean of its divisors is an integer number (14197014).

Almost surely, 2^28394027 is an apocalyptic number.

28394027 is a deficient number, since it is larger than the sum of its proper divisors (1).

28394027 is an equidigital number, since it uses as much as digits as its factorization.

28394027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 28394027 is about 5328.6046015819. The cubic root of 28394027 is about 305.0766697875.

The spelling of 28394027 in words is "twenty-eight million, three hundred ninety-four thousand, twenty-seven".