2728302065 has 4 divisors (see below), whose sum is σ = 3273962484. Its totient is φ = 2182641648.

The previous prime is 2728302037. The next prime is 2728302079. The reversal of 2728302065 is 5602038272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611473984 + 2116828081 = 24728^2 + 46009^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728302065 - 2²⁶ = 2661193201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272830202 + ... + 272830211.

It is an arithmetic number, because the mean of its divisors is an integer number (818490621).

Almost surely, 2^2728302065 is an apocalyptic number.

It is an amenable number.

2728302065 is a deficient number, since it is larger than the sum of its proper divisors (545660419).

2728302065 is an equidigital number, since it uses as much as digits as its factorization.

2728302065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545660418.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 2728302065 is about 52233.1510154231. The cubic root of 2728302065 is about 1397.3251759295.

The spelling of 2728302065 in words is "two billion, seven hundred twenty-eight million, three hundred two thousand, sixty-five".