28009327 has 2 divisors, whose sum is σ = 28009328. Its totient is φ = 28009326.

The previous prime is 28009313. The next prime is 28009343. The reversal of 28009327 is 72390082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28009327 - 2⁷ = 28009199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28009307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14004663 + 14004664.

It is an arithmetic number, because the mean of its divisors is an integer number (14004664).

Almost surely, 2^28009327 is an apocalyptic number.

28009327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28009327 is an equidigital number, since it uses as much as digits as its factorization.

28009327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 28009327 is about 5292.3838674080. The cubic root of 28009327 is about 303.6926104270.

The spelling of 28009327 in words is "twenty-eight million, nine thousand, three hundred twenty-seven".