28550875 has 16 divisors (see below), whose sum is σ = 36144576. Its totient is φ = 22512000.

The previous prime is 28550869. The next prime is 28550887. The reversal of 28550875 is 57805582.

It is not a de Polignac number, because 28550875 - 2⁷ = 28550747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7267 + ... + 10483.

It is an arithmetic number, because the mean of its divisors is an integer number (2259036).

Almost surely, 2^28550875 is an apocalyptic number.

28550875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28550875 is a deficient number, since it is larger than the sum of its proper divisors (7593701).

28550875 is an equidigital number, since it uses as much as digits as its factorization.

28550875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303 (or 3293 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 28550875 is about 5343.3018817956. The cubic root of 28550875 is about 305.6373842671.

The spelling of 28550875 in words is "twenty-eight million, five hundred fifty thousand, eight hundred seventy-five".