28166313 has 16 divisors (see below), whose sum is σ = 43114880. Its totient is φ = 16022016.

The previous prime is 28166293. The next prime is 28166317. The reversal of 28166313 is 31366182.

It is not a de Polignac number, because 28166313 - 2⁶ = 28166249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28166317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1881 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (2694680).

Almost surely, 2^28166313 is an apocalyptic number.

It is an amenable number.

28166313 is a deficient number, since it is larger than the sum of its proper divisors (14948567).

28166313 is a wasteful number, since it uses less digits than its factorization.

28166313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096.

The product of its digits is 5184, while the sum is 30.

The square root of 28166313 is about 5307.1944565844. The cubic root of 28166313 is about 304.2589300475.

The spelling of 28166313 in words is "twenty-eight million, one hundred sixty-six thousand, three hundred thirteen".