2728040 has 32 divisors (see below), whose sum is σ = 7015680. Its totient is φ = 935232.

The previous prime is 2728027. The next prime is 2728043. The reversal of 2728040 is 408272.

It is a junction number, because it is equal to n+sod(n) for n = 2727997 and 2728015.

It is not an unprimeable number, because it can be changed into a prime (2728043) 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, 4592 + ... + 5151.

It is an arithmetic number, because the mean of its divisors is an integer number (219240).

2^2728040 is an apocalyptic number.

2728040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2728040 is an abundant number, since it is smaller than the sum of its proper divisors (4287640).

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

2728040 is a wasteful number, since it uses less digits than its factorization.

2728040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761 (or 9757 counting only the distinct ones).

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

The square root of 2728040 is about 1651.6779347076. The cubic root of 2728040 is about 139.7280434825.

The spelling of 2728040 in words is "two million, seven hundred twenty-eight thousand, forty".