28847275 has 6 divisors (see below), whose sum is σ = 35770652. Its totient is φ = 23077800.

The previous prime is 28847243. The next prime is 28847279. The reversal of 28847275 is 57274882.

It is not a de Polignac number, because 28847275 - 2⁵ = 28847243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28847279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 576921 + ... + 576970.

Almost surely, 2^28847275 is an apocalyptic number.

28847275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28847275 is a deficient number, since it is larger than the sum of its proper divisors (6923377).

28847275 is a wasteful number, since it uses less digits than its factorization.

28847275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153901 (or 1153896 counting only the distinct ones).

The product of its digits is 250880, while the sum is 43.

The square root of 28847275 is about 5370.9659280245. The cubic root of 28847275 is about 306.6914001528.

The spelling of 28847275 in words is "twenty-eight million, eight hundred forty-seven thousand, two hundred seventy-five".