4481728 has 28 divisors (see below), whose sum is σ = 8961120. Its totient is φ = 2223872.

The previous prime is 4481723. The next prime is 4481767. The reversal of 4481728 is 8271844.

4481728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 4481693 and 4481702.

It is not an unprimeable number, because it can be changed into a prime (4481723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15150 + ... + 15442.

It is an arithmetic number, because the mean of its divisors is an integer number (320040).

Almost surely, 2^4481728 is an apocalyptic number.

It is an amenable number.

4481728 is a deficient number, since it is larger than the sum of its proper divisors (4479392).

4481728 is a wasteful number, since it uses less digits than its factorization.

4481728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 534 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 4481728 is about 2117.0092111278. The cubic root of 4481728 is about 164.8726044494.

The spelling of 4481728 in words is "four million, four hundred eighty-one thousand, seven hundred twenty-eight".