2728516 has 18 divisors (see below), whose sum is σ = 5554878. Its totient is φ = 1169280.

The previous prime is 2728507. The next prime is 2728519. The reversal of 2728516 is 6158272.

It can be written as a sum of positive squares in only one way, i.e., 2414916 + 313600 = 1554^2 + 560^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6765 + ... + 7156.

2^2728516 is an apocalyptic number.

It is an amenable number.

2728516 is an abundant number, since it is smaller than the sum of its proper divisors (2826362).

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

2728516 is a wasteful number, since it uses less digits than its factorization.

2728516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13939 (or 13930 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 2728516 is about 1651.8220243113. The cubic root of 2728516 is about 139.7361697906.

The spelling of 2728516 in words is "two million, seven hundred twenty-eight thousand, five hundred sixteen".