2728704 has 144 divisors (see below), whose sum is σ = 8830080. Its totient is φ = 737280.

The previous prime is 2728703. The next prime is 2728711. The reversal of 2728704 is 4078272.

It is not an unprimeable number, because it can be changed into a prime (2728703) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 143607 + ... + 143625.

It is an arithmetic number, because the mean of its divisors is an integer number (61320).

2^2728704 is an apocalyptic number.

2728704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2728704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4415040).

2728704 is an abundant number, since it is smaller than the sum of its proper divisors (6101376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2728704 is a wasteful number, since it uses less digits than its factorization.

2728704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2728704 is about 1651.8789301883. The cubic root of 2728704 is about 139.7393790805.

The spelling of 2728704 in words is "two million, seven hundred twenty-eight thousand, seven hundred four".