3840028 has 24 divisors (see below), whose sum is σ = 7182000. Its totient is φ = 1790208.

The previous prime is 3840017. The next prime is 3840037. The reversal of 3840028 is 8200483.

It is a junction number, because it is equal to n+sod(n) for n = 3839984 and 3840011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9943 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (299250).

Almost surely, 2^3840028 is an apocalyptic number.

It is an amenable number.

3840028 is a deficient number, since it is larger than the sum of its proper divisors (3341972).

3840028 is a wasteful number, since it uses less digits than its factorization.

3840028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 3840028 is about 1959.5989385586. The cubic root of 3840028 is about 156.5950862580.

The spelling of 3840028 in words is "three million, eight hundred forty thousand, twenty-eight".