2728704137 has 2 divisors, whose sum is σ = 2728704138. Its totient is φ = 2728704136.

The previous prime is 2728704127. The next prime is 2728704151. The reversal of 2728704137 is 7314078272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2235020176 + 493683961 = 47276^2 + 22219^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728704137 - 2¹⁰ = 2728703113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2728704094 and 2728704103.

It is not a weakly prime, because it can be changed into another prime (2728704127) 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 as a sum of consecutive naturals, namely, 1364352068 + 1364352069.

It is an arithmetic number, because the mean of its divisors is an integer number (1364352069).

Almost surely, 2^2728704137 is an apocalyptic number.

It is an amenable number.

2728704137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728704137 is an equidigital number, since it uses as much as digits as its factorization.

2728704137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 2728704137 is about 52236.9996937037. Note that the first 3 decimals coincide. The cubic root of 2728704137 is about 1397.3938141910.

The spelling of 2728704137 in words is "two billion, seven hundred twenty-eight million, seven hundred four thousand, one hundred thirty-seven".