4028028 has 12 divisors (see below), whose sum is σ = 9398760. Its totient is φ = 1342672.

The previous prime is 4028009. The next prime is 4028069. The reversal of 4028028 is 8208204.

4028028 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 4027989 and 4028007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167823 + ... + 167846.

It is an arithmetic number, because the mean of its divisors is an integer number (783230).

Almost surely, 2^4028028 is an apocalyptic number.

It is an amenable number.

4028028 is an abundant number, since it is smaller than the sum of its proper divisors (5370732).

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

4028028 is a wasteful number, since it uses less digits than its factorization.

4028028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335676 (or 335674 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 4028028 is about 2006.9947683041. The cubic root of 4028028 is about 159.1100065435.

The spelling of 4028028 in words is "four million, twenty-eight thousand, twenty-eight".