28567247 has 2 divisors, whose sum is σ = 28567248. Its totient is φ = 28567246.

The previous prime is 28567243. The next prime is 28567267. The reversal of 28567247 is 74276582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28567247 - 2² = 28567243 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 (28567243) 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, 14283623 + 14283624.

It is an arithmetic number, because the mean of its divisors is an integer number (14283624).

Almost surely, 2^28567247 is an apocalyptic number.

28567247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28567247 is an equidigital number, since it uses as much as digits as its factorization.

28567247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 41.

The square root of 28567247 is about 5344.8336737451. The cubic root of 28567247 is about 305.6957939083.

The spelling of 28567247 in words is "twenty-eight million, five hundred sixty-seven thousand, two hundred forty-seven".