27028645 has 12 divisors (see below), whose sum is σ = 37730124. Its totient is φ = 18533760.

The previous prime is 27028637. The next prime is 27028669. The reversal of 27028645 is 54682072.

It can be written as a sum of positive squares in 2 ways, for example, as 14876449 + 12152196 = 3857^2 + 3486^2 .

It is not a de Polignac number, because 27028645 - 2³ = 27028637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27028645.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 54916 + ... + 55405.

It is an arithmetic number, because the mean of its divisors is an integer number (3144177).

Almost surely, 2^27028645 is an apocalyptic number.

It is an amenable number.

27028645 is a deficient number, since it is larger than the sum of its proper divisors (10701479).

27028645 is a wasteful number, since it uses less digits than its factorization.

27028645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110340 (or 110333 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 27028645 is about 5198.9080584292. The cubic root of 27028645 is about 300.1060550959.

The spelling of 27028645 in words is "twenty-seven million, twenty-eight thousand, six hundred forty-five".