28268087 has 2 divisors, whose sum is σ = 28268088. Its totient is φ = 28268086.

The previous prime is 28268047. The next prime is 28268089. The reversal of 28268087 is 78086282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28268087 - 2⁸ = 28267831 is a prime.

Together with 28268089, 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 (28268089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14134043 + 14134044.

It is an arithmetic number, because the mean of its divisors is an integer number (14134044).

Almost surely, 2^28268087 is an apocalyptic number.

28268087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28268087 is an equidigital number, since it uses as much as digits as its factorization.

28268087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 28268087 is about 5316.7741159466. The cubic root of 28268087 is about 304.6249515278.

The spelling of 28268087 in words is "twenty-eight million, two hundred sixty-eight thousand, eighty-seven".