28735271 has 2 divisors, whose sum is σ = 28735272. Its totient is φ = 28735270.

The previous prime is 28735261. The next prime is 28735279. The reversal of 28735271 is 17253782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28735271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28735279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14367635 + 14367636.

It is an arithmetic number, because the mean of its divisors is an integer number (14367636).

Almost surely, 2^28735271 is an apocalyptic number.

28735271 is a deficient number, since it is larger than the sum of its proper divisors (1).

28735271 is an equidigital number, since it uses as much as digits as its factorization.

28735271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 28735271 is about 5360.5289850909. The cubic root of 28735271 is about 306.2939597593.

The spelling of 28735271 in words is "twenty-eight million, seven hundred thirty-five thousand, two hundred seventy-one".