2728997 has 2 divisors, whose sum is σ = 2728998. Its totient is φ = 2728996.

The previous prime is 2728981. The next prime is 2729003. The reversal of 2728997 is 7998272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1865956 + 863041 = 1366^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728997 - 2⁴ = 2728981 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2728907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1364498 + 1364499.

It is an arithmetic number, because the mean of its divisors is an integer number (1364499).

2^2728997 is an apocalyptic number.

It is an amenable number.

2728997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2728997 is an equidigital number, since it uses as much as digits as its factorization.

2728997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 2728997 is about 1651.9676146947. The cubic root of 2728997 is about 139.7443804991.

The spelling of 2728997 in words is "two million, seven hundred twenty-eight thousand, nine hundred ninety-seven".