3280028 has 12 divisors (see below), whose sum is σ = 5793480. Its totient is φ = 1624752.

The previous prime is 3280009. The next prime is 3280033. The reversal of 3280028 is 8200823.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3279985 and 3280012.

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, 3326 + ... + 4197.

It is an arithmetic number, because the mean of its divisors is an integer number (482790).

Almost surely, 2^3280028 is an apocalyptic number.

It is an amenable number.

3280028 is a deficient number, since it is larger than the sum of its proper divisors (2513452).

3280028 is a wasteful number, since it uses less digits than its factorization.

3280028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 3280028 is about 1811.0847578178. The cubic root of 3280028 is about 148.5795996140.

The spelling of 3280028 in words is "three million, two hundred eighty thousand, twenty-eight".