3865028 has 6 divisors (see below), whose sum is σ = 6763806. Its totient is φ = 1932512.

The previous prime is 3865019. The next prime is 3865063. The reversal of 3865028 is 8205683.

It can be written as a sum of positive squares in only one way, i.e., 3104644 + 760384 = 1762^2 + 872^2 .

It is a super-3 number, since 3×3865028³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3864985 and 3865003.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 483125 + ... + 483132.

It is an arithmetic number, because the mean of its divisors is an integer number (1127301).

Almost surely, 2^3865028 is an apocalyptic number.

It is an amenable number.

3865028 is a deficient number, since it is larger than the sum of its proper divisors (2898778).

3865028 is a wasteful number, since it uses less digits than its factorization.

3865028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966261 (or 966259 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 3865028 is about 1965.9674463225. The cubic root of 3865028 is about 156.9341820481.

The spelling of 3865028 in words is "three million, eight hundred sixty-five thousand, twenty-eight".