440728 has 16 divisors (see below), whose sum is σ = 837000. Its totient is φ = 217536.

The previous prime is 440723. The next prime is 440731. The reversal of 440728 is 827044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440723) 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, 403 + ... + 1021.

2⁴⁴⁰⁷²⁸ is an apocalyptic number.

It is an amenable number.

440728 is a deficient number, since it is larger than the sum of its proper divisors (396272).

440728 is a wasteful number, since it uses less digits than its factorization.

440728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 440728 is about 663.8734819226. The cubic root of 440728 is about 76.1009738197.

The spelling of 440728 in words is "four hundred forty thousand, seven hundred twenty-eight".