2056728 has 48 divisors (see below), whose sum is σ = 5522040. Its totient is φ = 636160.

The previous prime is 2056727. The next prime is 2056741. The reversal of 2056728 is 8276502.

It is a junction number, because it is equal to n+sod(n) for n = 2056695 and 2056704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28933 + ... + 29003.

2^2056728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2056728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2761020).

2056728 is an abundant number, since it is smaller than the sum of its proper divisors (3465312).

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

2056728 is a wasteful number, since it uses less digits than its factorization.

2056728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2056728 is about 1434.1297012474. The cubic root of 2056728 is about 127.1722300044.

The spelling of 2056728 in words is "two million, fifty-six thousand, seven hundred twenty-eight".