28044271 has 6 divisors (see below), whose sum is σ = 29791280. Its totient is φ = 26394336.

The previous prime is 28044259. The next prime is 28044277. The reversal of 28044271 is 17244082.

It is not a de Polignac number, because 28044271 - 2⁵ = 28044239 is a prime.

It is a super-2 number, since 2×28044271² = 1572962271842882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48231 + ... + 48808.

Almost surely, 2^28044271 is an apocalyptic number.

28044271 is a deficient number, since it is larger than the sum of its proper divisors (1747009).

28044271 is an equidigital number, since it uses as much as digits as its factorization.

28044271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97073 (or 97056 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28044271 is about 5295.6841862029. The cubic root of 28044271 is about 303.8188519990.

It can be divided in two parts, 280 and 44271, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 28044271 in words is "twenty-eight million, forty-four thousand, two hundred seventy-one".