28686102 has 8 divisors (see below), whose sum is σ = 57372216. Its totient is φ = 9562032.

The previous prime is 28686071. The next prime is 28686107. The reversal of 28686102 is 20168682.

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

28686102 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28686107) 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, 2390503 + ... + 2390514.

It is an arithmetic number, because the mean of its divisors is an integer number (7171527).

Almost surely, 2^28686102 is an apocalyptic number.

28686102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28686102 is a wasteful number, since it uses less digits than its factorization.

28686102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781022.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28686102 is about 5355.9408137133. The cubic root of 28686102 is about 306.1191598799.

The spelling of 28686102 in words is "twenty-eight million, six hundred eighty-six thousand, one hundred two".