28805875 has 24 divisors (see below), whose sum is σ = 41827968. Its totient is φ = 19748400.

The previous prime is 28805857. The next prime is 28805891. The reversal of 28805875 is 57850882.

It is not a de Polignac number, because 28805875 - 2¹³ = 28797683 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3774 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (1742832).

Almost surely, 2^28805875 is an apocalyptic number.

28805875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28805875 is a deficient number, since it is larger than the sum of its proper divisors (13022093).

28805875 is an equidigital number, since it uses as much as digits as its factorization.

28805875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 43.

The square root of 28805875 is about 5367.1104888944. The cubic root of 28805875 is about 306.5446144473.

The spelling of 28805875 in words is "twenty-eight million, eight hundred five thousand, eight hundred seventy-five".