28171271 has 2 divisors, whose sum is σ = 28171272. Its totient is φ = 28171270.

The previous prime is 28171237. The next prime is 28171277. The reversal of 28171271 is 17217182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28171271 - 2⁶ = 28171207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28171277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14085635 + 14085636.

It is an arithmetic number, because the mean of its divisors is an integer number (14085636).

Almost surely, 2^28171271 is an apocalyptic number.

28171271 is a deficient number, since it is larger than the sum of its proper divisors (1).

28171271 is an equidigital number, since it uses as much as digits as its factorization.

28171271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1568, while the sum is 29.

The square root of 28171271 is about 5307.6615378149. The cubic root of 28171271 is about 304.2767814820.

The spelling of 28171271 in words is "twenty-eight million, one hundred seventy-one thousand, two hundred seventy-one".