2728907090605 has 8 divisors (see below), whose sum is σ = 3276302463000. Its totient is φ = 2182049702976.

The previous prime is 2728907090531. The next prime is 2728907090699. The reversal of 2728907090605 is 5060907098272.

It can be written as a sum of positive squares in 4 ways, for example, as 1338031233289 + 1390875857316 = 1156733^2 + 1179354^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2728907090605 - 2¹⁷ = 2728906959533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134485030 + ... + 134505319.

It is an arithmetic number, because the mean of its divisors is an integer number (409537807875).

Almost surely, 2^{2728907090605} is an apocalyptic number.

It is an amenable number.

2728907090605 is a deficient number, since it is larger than the sum of its proper divisors (547395372395).

2728907090605 is a wasteful number, since it uses less digits than its factorization.

2728907090605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268992383.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 2728907090605 in words is "two trillion, seven hundred twenty-eight billion, nine hundred seven million, ninety thousand, six hundred five".