28248105 has 8 divisors (see below), whose sum is σ = 45196992. Its totient is φ = 15065648.

The previous prime is 28248097. The next prime is 28248133. The reversal of 28248105 is 50184282.

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

It is a cyclic number.

It is not a de Polignac number, because 28248105 - 2³ = 28248097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941589 + ... + 941618.

It is an arithmetic number, because the mean of its divisors is an integer number (5649624).

Almost surely, 2^28248105 is an apocalyptic number.

It is an amenable number.

28248105 is a deficient number, since it is larger than the sum of its proper divisors (16948887).

28248105 is a wasteful number, since it uses less digits than its factorization.

28248105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883215.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28248105 is about 5314.8946367732. The cubic root of 28248105 is about 304.5531573688.

The spelling of 28248105 in words is "twenty-eight million, two hundred forty-eight thousand, one hundred five".