28966687 has 2 divisors, whose sum is σ = 28966688. Its totient is φ = 28966686.

The previous prime is 28966631. The next prime is 28966703. The reversal of 28966687 is 78666982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28966687 - 2¹⁹ = 28442399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28966187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14483343 + 14483344.

It is an arithmetic number, because the mean of its divisors is an integer number (14483344).

Almost surely, 2^28966687 is an apocalyptic number.

28966687 is a deficient number, since it is larger than the sum of its proper divisors (1).

28966687 is an equidigital number, since it uses as much as digits as its factorization.

28966687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 28966687 is about 5382.0708839628. The cubic root of 28966687 is about 307.1139960107.

The spelling of 28966687 in words is "twenty-eight million, nine hundred sixty-six thousand, six hundred eighty-seven".