3662728 has 16 divisors (see below), whose sum is σ = 6892380. Its totient is φ = 1824768.

The previous prime is 3662723. The next prime is 3662731. The reversal of 3662728 is 8272663.

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 357604 = 1818^2 + 598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3662693 and 3662702.

It is not an unprimeable number, because it can be changed into a prime (3662723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2176 + ... + 3472.

Almost surely, 2^3662728 is an apocalyptic number.

It is an amenable number.

3662728 is a deficient number, since it is larger than the sum of its proper divisors (3229652).

3662728 is a wasteful number, since it uses less digits than its factorization.

3662728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1652 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 3662728 is about 1913.8254883871. The cubic root of 3662728 is about 154.1469334697.

The spelling of 3662728 in words is "three million, six hundred sixty-two thousand, seven hundred twenty-eight".