28009367 has 2 divisors, whose sum is σ = 28009368. Its totient is φ = 28009366.

The previous prime is 28009357. The next prime is 28009381. The reversal of 28009367 is 76390082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28009367 - 2¹⁴ = 27992983 is a prime.

It is a Chen 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, 14004683 + 14004684.

It is an arithmetic number, because the mean of its divisors is an integer number (14004684).

Almost surely, 2^28009367 is an apocalyptic number.

28009367 is a deficient number, since it is larger than the sum of its proper divisors (1).

28009367 is an equidigital number, since it uses as much as digits as its factorization.

28009367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 28009367 is about 5292.3876464220. The cubic root of 28009367 is about 303.6927549943.

It can be divided in two parts, 2800 and 9367, that added together give a cube (12167 = 23³).

The spelling of 28009367 in words is "twenty-eight million, nine thousand, three hundred sixty-seven".