2728144 has 10 divisors (see below), whose sum is σ = 5285810. Its totient is φ = 1364064.

The previous prime is 2728129. The next prime is 2728163. The reversal of 2728144 is 4418272.

It can be written as a sum of positive squares in only one way, i.e., 2598544 + 129600 = 1612^2 + 360^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85239 + ... + 85270.

It is an arithmetic number, because the mean of its divisors is an integer number (528581).

2^2728144 is an apocalyptic number.

It is an amenable number.

2728144 is a deficient number, since it is larger than the sum of its proper divisors (2557666).

2728144 is a wasteful number, since it uses less digits than its factorization.

2728144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170517 (or 170511 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 2728144 is about 1651.7094175429. The cubic root of 2728144 is about 139.7298190590.

The spelling of 2728144 in words is "two million, seven hundred twenty-eight thousand, one hundred forty-four".