28116745 has 8 divisors (see below), whose sum is σ = 34312320. Its totient is φ = 22111920.

The previous prime is 28116727. The next prime is 28116757. The reversal of 28116745 is 54761182.

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

It is not a de Polignac number, because 28116745 - 2⁹ = 28116233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28116745.

It is an unprimeable number.

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, 47361 + ... + 47950.

It is an arithmetic number, because the mean of its divisors is an integer number (4289040).

Almost surely, 2^28116745 is an apocalyptic number.

It is an amenable number.

28116745 is a deficient number, since it is larger than the sum of its proper divisors (6195575).

28116745 is an equidigital number, since it uses as much as digits as its factorization.

28116745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95375.

The product of its digits is 13440, while the sum is 34.

The square root of 28116745 is about 5302.5225129178. The cubic root of 28116745 is about 304.0803436361.

The spelling of 28116745 in words is "twenty-eight million, one hundred sixteen thousand, seven hundred forty-five".