28248686 has 8 divisors (see below), whose sum is σ = 43518360. Its totient is φ = 13742568.

The previous prime is 28248683. The next prime is 28248691. The reversal of 28248686 is 68684282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248683) 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, 190796 + ... + 190943.

It is an arithmetic number, because the mean of its divisors is an integer number (5439795).

Almost surely, 2^28248686 is an apocalyptic number.

28248686 is a deficient number, since it is larger than the sum of its proper divisors (15269674).

28248686 is a wasteful number, since it uses less digits than its factorization.

28248686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381778.

The product of its digits is 294912, while the sum is 44.

The square root of 28248686 is about 5314.9492942078. The cubic root of 28248686 is about 304.5552453457. Note that the first 3 decimals are identical.

The spelling of 28248686 in words is "twenty-eight million, two hundred forty-eight thousand, six hundred eighty-six".