3728444 has 24 divisors (see below), whose sum is σ = 6819120. Its totient is φ = 1782144.

The previous prime is 3728441. The next prime is 3728447. The reversal of 3728444 is 4448273.

3728444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3728441) and next prime (3728447).

It is a super-2 number, since 2×3728444² = 27802589322272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3728444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8912 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (284130).

Almost surely, 2^3728444 is an apocalyptic number.

It is an amenable number.

3728444 is a deficient number, since it is larger than the sum of its proper divisors (3090676).

3728444 is a wasteful number, since it uses less digits than its factorization.

3728444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 3728444 is about 1930.9179164325. The cubic root of 3728444 is about 155.0633663910.

The spelling of 3728444 in words is "three million, seven hundred twenty-eight thousand, four hundred forty-four".