3270728 has 8 divisors (see below), whose sum is σ = 6132630. Its totient is φ = 1635360.

The previous prime is 3270727. The next prime is 3270733. The reversal of 3270728 is 8270723.

It can be written as a sum of positive squares in only one way, i.e., 2696164 + 574564 = 1642^2 + 758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3270728.

It is not an unprimeable number, because it can be changed into a prime (3270727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204413 + ... + 204428.

Almost surely, 2^3270728 is an apocalyptic number.

It is an amenable number.

3270728 is a deficient number, since it is larger than the sum of its proper divisors (2861902).

3270728 is a wasteful number, since it uses less digits than its factorization.

3270728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408847 (or 408843 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 3270728 is about 1808.5154132603. The cubic root of 3270728 is about 148.4390420449.

The spelling of 3270728 in words is "three million, two hundred seventy thousand, seven hundred twenty-eight".