28271248 has 20 divisors (see below), whose sum is σ = 54861568. Its totient is φ = 14113440.

The previous prime is 28271239. The next prime is 28271249. The reversal of 28271248 is 84217282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28271249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14965 + ... + 16747.

Almost surely, 2^28271248 is an apocalyptic number.

It is an amenable number.

28271248 is a deficient number, since it is larger than the sum of its proper divisors (26590320).

28271248 is a wasteful number, since it uses less digits than its factorization.

28271248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2776 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 28271248 is about 5317.0713743564. The cubic root of 28271248 is about 304.6363057165.

The spelling of 28271248 in words is "twenty-eight million, two hundred seventy-one thousand, two hundred forty-eight".