28858087 has 2 divisors, whose sum is σ = 28858088. Its totient is φ = 28858086.

The previous prime is 28858073. The next prime is 28858111. The reversal of 28858087 is 78085882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28858087 - 2¹¹ = 28856039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28858057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429043 + 14429044.

It is an arithmetic number, because the mean of its divisors is an integer number (14429044).

Almost surely, 2^28858087 is an apocalyptic number.

28858087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858087 is an equidigital number, since it uses as much as digits as its factorization.

28858087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 28858087 is about 5371.9723565931. The cubic root of 28858087 is about 306.7297114922.

The spelling of 28858087 in words is "twenty-eight million, eight hundred fifty-eight thousand, eighty-seven".