28686127 has 2 divisors, whose sum is σ = 28686128. Its totient is φ = 28686126.

The previous prime is 28686109. The next prime is 28686167. The reversal of 28686127 is 72168682.

It is an a-pointer prime, because the next prime (28686167) can be obtained adding 28686127 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28686127 - 2⁷ = 28685999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28686127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28686107) 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, 14343063 + 14343064.

It is an arithmetic number, because the mean of its divisors is an integer number (14343064).

Almost surely, 2^28686127 is an apocalyptic number.

28686127 is a deficient number, since it is larger than the sum of its proper divisors (1).

28686127 is an equidigital number, since it uses as much as digits as its factorization.

28686127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 28686127 is about 5355.9431475698. The cubic root of 28686127 is about 306.1192488078.

The spelling of 28686127 in words is "twenty-eight million, six hundred eighty-six thousand, one hundred twenty-seven".