3670728 has 16 divisors (see below), whose sum is σ = 9176880. Its totient is φ = 1223568.

The previous prime is 3670721. The next prime is 3670739. The reversal of 3670728 is 8270763.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3670721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76450 + ... + 76497.

It is an arithmetic number, because the mean of its divisors is an integer number (573555).

Almost surely, 2^3670728 is an apocalyptic number.

It is an amenable number.

3670728 is an abundant number, since it is smaller than the sum of its proper divisors (5506152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3670728 is a wasteful number, since it uses less digits than its factorization.

3670728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152956 (or 152952 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 3670728 is about 1915.9144030984. The cubic root of 3670728 is about 154.2590792744.

Subtracting from 3670728 its sum of digits (33), we obtain a triangular number (3670695 = T₂₇₀₉).

The spelling of 3670728 in words is "three million, six hundred seventy thousand, seven hundred twenty-eight".