28550087 has 2 divisors, whose sum is σ = 28550088. Its totient is φ = 28550086.

The previous prime is 28550077. The next prime is 28550099. The reversal of 28550087 is 78005582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28550087 - 2¹⁰ = 28549063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28550057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14275043 + 14275044.

It is an arithmetic number, because the mean of its divisors is an integer number (14275044).

Almost surely, 2^28550087 is an apocalyptic number.

28550087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28550087 is an equidigital number, since it uses as much as digits as its factorization.

28550087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 28550087 is about 5343.2281441091. The cubic root of 28550087 is about 305.6345723921.

The spelling of 28550087 in words is "twenty-eight million, five hundred fifty thousand, eighty-seven".