2728771 has 2 divisors, whose sum is σ = 2728772. Its totient is φ = 2728770.

The previous prime is 2728769. The next prime is 2728777. The reversal of 2728771 is 1778272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2728771 - 2¹ = 2728769 is a prime.

Together with 2728769, it forms a pair of twin primes.

2728771 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2728777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364385 + 1364386.

It is an arithmetic number, because the mean of its divisors is an integer number (1364386).

2^2728771 is an apocalyptic number.

2728771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728771 is an equidigital number, since it uses as much as digits as its factorization.

2728771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10976, while the sum is 34.

The square root of 2728771 is about 1651.8992100004. The cubic root of 2728771 is about 139.7405227811.

The spelling of 2728771 in words is "two million, seven hundred twenty-eight thousand, seven hundred seventy-one".