2728004 has 6 divisors (see below), whose sum is σ = 4774014. Its totient is φ = 1364000.

The previous prime is 2727997. The next prime is 2728013. The reversal of 2728004 is 4008272.

It can be written as a sum of positive squares in only one way, i.e., 2715904 + 12100 = 1648^2 + 110^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340997 + ... + 341004.

It is an arithmetic number, because the mean of its divisors is an integer number (795669).

2^2728004 is an apocalyptic number.

It is an amenable number.

2728004 is a deficient number, since it is larger than the sum of its proper divisors (2046010).

2728004 is a wasteful number, since it uses less digits than its factorization.

2728004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682005 (or 682003 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2728004 is about 1651.6670366633. The cubic root of 2728004 is about 139.7274288493.

The spelling of 2728004 in words is "two million, seven hundred twenty-eight thousand, four".