28845271 has 16 divisors (see below), whose sum is σ = 36232000. Its totient is φ = 22819104.

The previous prime is 28845269. The next prime is 28845281. The reversal of 28845271 is 17254882.

It is not a de Polignac number, because 28845271 - 2¹ = 28845269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28845271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28845251) 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 15 ways as a sum of consecutive naturals, for example, 1225 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (2264500).

Almost surely, 2^28845271 is an apocalyptic number.

28845271 is a deficient number, since it is larger than the sum of its proper divisors (7386729).

28845271 is an equidigital number, since it uses as much as digits as its factorization.

28845271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503 (or 6489 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28845271 is about 5370.7793661628. The cubic root of 28845271 is about 306.6842981094.

The spelling of 28845271 in words is "twenty-eight million, eight hundred forty-five thousand, two hundred seventy-one".