2758728 has 32 divisors (see below), whose sum is σ = 7882560. Its totient is φ = 788160.

The previous prime is 2758711. The next prime is 2758771. The reversal of 2758728 is 8278572.

2758728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2758728³ = 62986561899748333056, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8043 + ... + 8378.

It is an arithmetic number, because the mean of its divisors is an integer number (246330).

2^2758728 is an apocalyptic number.

2758728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2758728 is an abundant number, since it is smaller than the sum of its proper divisors (5123832).

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

2758728 is a wasteful number, since it uses less digits than its factorization.

2758728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16437 (or 16433 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 2758728 is about 1660.9419014523. The cubic root of 2758728 is about 140.2500293911.

It can be divided in two parts, 2758 and 728, that added together give a triangular number (3486 = T₈₃).

The spelling of 2758728 in words is "two million, seven hundred fifty-eight thousand, seven hundred twenty-eight".