28607875 has 16 divisors (see below), whose sum is σ = 36167040. Its totient is φ = 22588800.

The previous prime is 28607867. The next prime is 28607903. The reversal of 28607875 is 57870682.

It is a happy number.

It is not a de Polignac number, because 28607875 - 2³ = 28607867 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8427 + ... + 11323.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 2^28607875 is an apocalyptic number.

28607875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28607875 is a deficient number, since it is larger than the sum of its proper divisors (7559165).

28607875 is an equidigital number, since it uses as much as digits as its factorization.

28607875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28607875 is about 5348.6330029270. The cubic root of 28607875 is about 305.8406442398.

The spelling of 28607875 in words is "twenty-eight million, six hundred seven thousand, eight hundred seventy-five".