28875871 has 2 divisors, whose sum is σ = 28875872. Its totient is φ = 28875870.

The previous prime is 28875857. The next prime is 28875883. The reversal of 28875871 is 17857882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28875871 - 2¹³ = 28867679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28825871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14437935 + 14437936.

It is an arithmetic number, because the mean of its divisors is an integer number (14437936).

Almost surely, 2^28875871 is an apocalyptic number.

28875871 is a deficient number, since it is larger than the sum of its proper divisors (1).

28875871 is an equidigital number, since it uses as much as digits as its factorization.

28875871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 46.

The square root of 28875871 is about 5373.6273596147. The cubic root of 28875871 is about 306.7927066708.

The spelling of 28875871 in words is "twenty-eight million, eight hundred seventy-five thousand, eight hundred seventy-one".