2728541 has 2 divisors, whose sum is σ = 2728542. Its totient is φ = 2728540.

The previous prime is 2728519. The next prime is 2728543. The reversal of 2728541 is 1458272.

2728541 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., 2402500 + 326041 = 1550^2 + 571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2728541 is a prime.

Together with 2728543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2728543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364270 + 1364271.

It is an arithmetic number, because the mean of its divisors is an integer number (1364271).

2^2728541 is an apocalyptic number.

It is an amenable number.

2728541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728541 is an equidigital number, since it uses as much as digits as its factorization.

2728541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 2728541 is about 1651.8295916952. The cubic root of 2728541 is about 139.7365965663.

The spelling of 2728541 in words is "two million, seven hundred twenty-eight thousand, five hundred forty-one".