3728456 has 16 divisors (see below), whose sum is σ = 7017900. Its totient is φ = 1857024.

The previous prime is 3728447. The next prime is 3728471. The reversal of 3728456 is 6548273.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2856100 + 872356 = 1690^2 + 934^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an Ulam 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, 1760 + ... + 3248.

Almost surely, 2^3728456 is an apocalyptic number.

It is an amenable number.

3728456 is a deficient number, since it is larger than the sum of its proper divisors (3289444).

3728456 is a wasteful number, since it uses less digits than its factorization.

3728456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808 (or 1804 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 3728456 is about 1930.9210237604. The cubic root of 3728456 is about 155.0635327480.

The spelling of 3728456 in words is "three million, seven hundred twenty-eight thousand, four hundred fifty-six".