4056728 has 32 divisors (see below), whose sum is σ = 8626800. Its totient is φ = 1772928.

The previous prime is 4056721. The next prime is 4056733. The reversal of 4056728 is 8276504.

It is a junction number, because it is equal to n+sod(n) for n = 4056694 and 4056703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4056721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950 + ... + 3002.

Almost surely, 2^4056728 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 4056728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4313400).

4056728 is an abundant number, since it is smaller than the sum of its proper divisors (4570072).

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

4056728 is a wasteful number, since it uses less digits than its factorization.

4056728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 4056728 is about 2014.1320711413. The cubic root of 4056728 is about 159.4870028029.

The spelling of 4056728 in words is "four million, fifty-six thousand, seven hundred twenty-eight".