28359887 has 2 divisors, whose sum is σ = 28359888. Its totient is φ = 28359886.

The previous prime is 28359853. The next prime is 28359889. The reversal of 28359887 is 78895382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28359887 - 2⁸ = 28359631 is a prime.

Together with 28359889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28359889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14179943 + 14179944.

It is an arithmetic number, because the mean of its divisors is an integer number (14179944).

Almost surely, 2^28359887 is an apocalyptic number.

28359887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28359887 is an equidigital number, since it uses as much as digits as its factorization.

28359887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 28359887 is about 5325.4001727570. The cubic root of 28359887 is about 304.9543495235.

The spelling of 28359887 in words is "twenty-eight million, three hundred fifty-nine thousand, eight hundred eighty-seven".