2728017139 has 2 divisors, whose sum is σ = 2728017140. Its totient is φ = 2728017138.

The previous prime is 2728017107. The next prime is 2728017151. The reversal of 2728017139 is 9317108272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2728017139 - 2⁵ = 2728017107 is a prime.

It is not a weakly prime, because it can be changed into another prime (2728017179) by changing a digit.

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 as a sum of consecutive naturals, namely, 1364008569 + 1364008570.

It is an arithmetic number, because the mean of its divisors is an integer number (1364008570).

Almost surely, 2^2728017139 is an apocalyptic number.

2728017139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728017139 is an equidigital number, since it uses as much as digits as its factorization.

2728017139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 2728017139 is about 52230.4235001019. The cubic root of 2728017139 is about 1397.2765317394.

The spelling of 2728017139 in words is "two billion, seven hundred twenty-eight million, seventeen thousand, one hundred thirty-nine".