28748087 has 2 divisors, whose sum is σ = 28748088. Its totient is φ = 28748086.

The previous prime is 28748063. The next prime is 28748189. The reversal of 28748087 is 78084782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28748087 - 2⁶ = 28748023 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 (28748017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14374043 + 14374044.

It is an arithmetic number, because the mean of its divisors is an integer number (14374044).

Almost surely, 2^28748087 is an apocalyptic number.

28748087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28748087 is an equidigital number, since it uses as much as digits as its factorization.

28748087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 28748087 is about 5361.7242562444. The cubic root of 28748087 is about 306.3394889389.

The spelling of 28748087 in words is "twenty-eight million, seven hundred forty-eight thousand, eighty-seven".