4493728 has 36 divisors (see below), whose sum is σ = 9361170. Its totient is φ = 2123136.

The previous prime is 4493707. The next prime is 4493759. The reversal of 4493728 is 8273944.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4210704 + 283024 = 2052^2 + 532^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11358 + ... + 11746.

Almost surely, 2^4493728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4493728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4680585).

4493728 is an abundant number, since it is smaller than the sum of its proper divisors (4867442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4493728 is a wasteful number, since it uses less digits than its factorization.

4493728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 410 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 4493728 is about 2119.8415035092. The cubic root of 4493728 is about 165.0196242346.

The spelling of 4493728 in words is "four million, four hundred ninety-three thousand, seven hundred twenty-eight".