2728813273 has 2 divisors, whose sum is σ = 2728813274. Its totient is φ = 2728813272.

The previous prime is 2728813271. The next prime is 2728813277. The reversal of 2728813273 is 3723188272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2651426064 + 77387209 = 51492^2 + 8797^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728813273 - 2¹ = 2728813271 is a prime.

Together with 2728813271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2728813271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364406636 + 1364406637.

It is an arithmetic number, because the mean of its divisors is an integer number (1364406637).

Almost surely, 2^2728813273 is an apocalyptic number.

It is an amenable number.

2728813273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728813273 is an equidigital number, since it uses as much as digits as its factorization.

2728813273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 2728813273 is about 52238.0443068077. The cubic root of 2728813273 is about 1397.4124437835.

The spelling of 2728813273 in words is "two billion, seven hundred twenty-eight million, eight hundred thirteen thousand, two hundred seventy-three".