2728841 has 2 divisors, whose sum is σ = 2728842. Its totient is φ = 2728840.

The previous prime is 2728819. The next prime is 2728853. The reversal of 2728841 is 1488272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2572816 + 156025 = 1604^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728841 - 2⁶ = 2728777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2728798 and 2728807.

It is not a weakly prime, because it can be changed into another prime (2728801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364420 + 1364421.

It is an arithmetic number, because the mean of its divisors is an integer number (1364421).

2^2728841 is an apocalyptic number.

It is an amenable number.

2728841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728841 is an equidigital number, since it uses as much as digits as its factorization.

2728841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 32.

The square root of 2728841 is about 1651.9203975979. The cubic root of 2728841 is about 139.7417176723.

The spelling of 2728841 in words is "two million, seven hundred twenty-eight thousand, eight hundred forty-one".