28116266 has 16 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 13183680.

The previous prime is 28116259. The next prime is 28116269. The reversal of 28116266 is 66261182.

It is not an unprimeable number, because it can be changed into a prime (28116269) 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 7 ways as a sum of consecutive naturals, for example, 9245 + ... + 11903.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^28116266 is an apocalyptic number.

28116266 is a deficient number, since it is larger than the sum of its proper divisors (16699414).

28116266 is a wasteful number, since it uses less digits than its factorization.

28116266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989.

The product of its digits is 6912, while the sum is 32.

The square root of 28116266 is about 5302.4773455433. The cubic root of 28116266 is about 304.0786168441.

It can be divided in two parts, 28116 and 266, that added together give a palindrome (28382).

The spelling of 28116266 in words is "twenty-eight million, one hundred sixteen thousand, two hundred sixty-six".