2728444 has 24 divisors (see below), whose sum is σ = 5096448. Its totient is φ = 1275120.

The previous prime is 2728409. The next prime is 2728447. The reversal of 2728444 is 4448272.

It is a super-2 number, since 2×2728444² = 14888813322272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4009 + ... + 4639.

It is an arithmetic number, because the mean of its divisors is an integer number (212352).

2^2728444 is an apocalyptic number.

It is an amenable number.

2728444 is a deficient number, since it is larger than the sum of its proper divisors (2368004).

2728444 is a wasteful number, since it uses less digits than its factorization.

2728444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 2728444 is about 1651.8002300520. The cubic root of 2728444 is about 139.7349406618.

The spelling of 2728444 in words is "two million, seven hundred twenty-eight thousand, four hundred forty-four".