28566143 has 2 divisors, whose sum is σ = 28566144. Its totient is φ = 28566142.

The previous prime is 28566127. The next prime is 28566157. The reversal of 28566143 is 34166582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28566143 - 2⁴ = 28566127 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 (28566173) 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, 14283071 + 14283072.

It is an arithmetic number, because the mean of its divisors is an integer number (14283072).

Almost surely, 2^28566143 is an apocalyptic number.

28566143 is a deficient number, since it is larger than the sum of its proper divisors (1).

28566143 is an equidigital number, since it uses as much as digits as its factorization.

28566143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 28566143 is about 5344.7303954456. The cubic root of 28566143 is about 305.6918559194.

The spelling of 28566143 in words is "twenty-eight million, five hundred sixty-six thousand, one hundred forty-three".