3681928 has 16 divisors (see below), whose sum is σ = 7309980. Its totient is φ = 1732608.

The previous prime is 3681917. The next prime is 3681947. The reversal of 3681928 is 8291863.

It can be written as a sum of positive squares in 2 ways, for example, as 3602404 + 79524 = 1898^2 + 282^2 .

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, 13401 + ... + 13672.

Almost surely, 2^3681928 is an apocalyptic number.

It is an amenable number.

3681928 is a deficient number, since it is larger than the sum of its proper divisors (3628052).

3681928 is a wasteful number, since it uses less digits than its factorization.

3681928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27096 (or 27092 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 3681928 is about 1918.8350632610. The cubic root of 3681928 is about 154.4158099912.

The spelling of 3681928 in words is "three million, six hundred eighty-one thousand, nine hundred twenty-eight".