4005028 has 12 divisors (see below), whose sum is σ = 7198492. Its totient is φ = 1948320.

The previous prime is 4005019. The next prime is 4005049. The reversal of 4005028 is 8205004.

It is a happy number.

4005028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2050624 + 1954404 = 1432^2 + 1398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4004996 and 4005014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13383 + ... + 13678.

Almost surely, 2^4005028 is an apocalyptic number.

It is an amenable number.

4005028 is a deficient number, since it is larger than the sum of its proper divisors (3193464).

4005028 is a wasteful number, since it uses less digits than its factorization.

4005028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27102 (or 27100 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4005028 is about 2001.2566052358. The cubic root of 4005028 is about 158.8065894518.

The spelling of 4005028 in words is "four million, five thousand, twenty-eight".