28828087 has 2 divisors, whose sum is σ = 28828088. Its totient is φ = 28828086.

The previous prime is 28828081. The next prime is 28828097. The reversal of 28828087 is 78082882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28828087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28828081) 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, 14414043 + 14414044.

It is an arithmetic number, because the mean of its divisors is an integer number (14414044).

Almost surely, 2^28828087 is an apocalyptic number.

28828087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28828087 is an equidigital number, since it uses as much as digits as its factorization.

28828087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 28828087 is about 5369.1793600140. The cubic root of 28828087 is about 306.6233856426.

The spelling of 28828087 in words is "twenty-eight million, eight hundred twenty-eight thousand, eighty-seven".