2728705873 has 2 divisors, whose sum is σ = 2728705874. Its totient is φ = 2728705872.

The previous prime is 2728705831. The next prime is 2728705879. The reversal of 2728705873 is 3785078272.

2728705873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1830385089 + 898320784 = 42783^2 + 29972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728705873 - 2²¹ = 2726608721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2728705879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364352936 + 1364352937.

It is an arithmetic number, because the mean of its divisors is an integer number (1364352937).

Almost surely, 2^2728705873 is an apocalyptic number.

It is an amenable number.

2728705873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728705873 is an equidigital number, since it uses as much as digits as its factorization.

2728705873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The square root of 2728705873 is about 52237.0163102756. The cubic root of 2728705873 is about 1397.3941105313.

The spelling of 2728705873 in words is "two billion, seven hundred twenty-eight million, seven hundred five thousand, eight hundred seventy-three".