28844271 has 24 divisors (see below), whose sum is σ = 43259216. Its totient is φ = 18506880.

The previous prime is 28844269. The next prime is 28844273. The reversal of 28844271 is 17244882.

It is an interprime number because it is at equal distance from previous prime (28844269) and next prime (28844273).

It is not a de Polignac number, because 28844271 - 2¹ = 28844269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28844273) 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 23 ways as a sum of consecutive naturals, for example, 27741 + ... + 28761.

Almost surely, 2^28844271 is an apocalyptic number.

28844271 is a deficient number, since it is larger than the sum of its proper divisors (14414945).

28844271 is a wasteful number, since it uses less digits than its factorization.

28844271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1140 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 28844271 is about 5370.6862689977. The cubic root of 28844271 is about 306.6807540525.

The spelling of 28844271 in words is "twenty-eight million, eight hundred forty-four thousand, two hundred seventy-one".