28108271 has 8 divisors (see below), whose sum is σ = 29047200. Its totient is φ = 27178848.

The previous prime is 28108243. The next prime is 28108307. The reversal of 28108271 is 17280182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28108271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3905 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (3630900).

Almost surely, 2^28108271 is an apocalyptic number.

28108271 is a deficient number, since it is larger than the sum of its proper divisors (938929).

28108271 is a wasteful number, since it uses less digits than its factorization.

28108271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 28108271 is about 5301.7233990468. The cubic root of 28108271 is about 304.0497920230.

The spelling of 28108271 in words is "twenty-eight million, one hundred eight thousand, two hundred seventy-one".