28271255 has 16 divisors (see below), whose sum is σ = 37485504. Its totient is φ = 20359680.

The previous prime is 28271251. The next prime is 28271279. The reversal of 28271255 is 55217282.

It is a happy number.

It is not a de Polignac number, because 28271255 - 2² = 28271251 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 (28271251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5276 + ... + 9185.

It is an arithmetic number, because the mean of its divisors is an integer number (2342844).

Almost surely, 2^28271255 is an apocalyptic number.

28271255 is a deficient number, since it is larger than the sum of its proper divisors (9214249).

28271255 is a wasteful number, since it uses less digits than its factorization.

28271255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14506.

The product of its digits is 11200, while the sum is 32.

The square root of 28271255 is about 5317.0720326134. The cubic root of 28271255 is about 304.6363308593.

The spelling of 28271255 in words is "twenty-eight million, two hundred seventy-one thousand, two hundred fifty-five".