28680206 has 8 divisors (see below), whose sum is σ = 43062624. Its totient is φ = 14326000.

The previous prime is 28680181. The next prime is 28680209. The reversal of 28680206 is 60208682.

It is a happy number.

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 (28680209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4295 + ... + 8706.

It is an arithmetic number, because the mean of its divisors is an integer number (5382828).

Almost surely, 2^28680206 is an apocalyptic number.

28680206 is a deficient number, since it is larger than the sum of its proper divisors (14382418).

28680206 is a wasteful number, since it uses less digits than its factorization.

28680206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28680206 is about 5355.3903685913. The cubic root of 28680206 is about 306.0981857019.

Adding to 28680206 its reverse (60208682), we get a palindrome (88888888).

The spelling of 28680206 in words is "twenty-eight million, six hundred eighty thousand, two hundred six".