4230728 has 16 divisors (see below), whose sum is σ = 8147580. Its totient is φ = 2058048.

The previous prime is 4230719. The next prime is 4230731. The reversal of 4230728 is 8270324.

It can be written as a sum of positive squares in 2 ways, for example, as 4153444 + 77284 = 2038^2 + 278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4230697 and 4230706.

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 3 ways as a sum of consecutive naturals, for example, 6851 + ... + 7442.

Almost surely, 2^4230728 is an apocalyptic number.

It is an amenable number.

4230728 is a deficient number, since it is larger than the sum of its proper divisors (3916852).

4230728 is a wasteful number, since it uses less digits than its factorization.

4230728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14336 (or 14332 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4230728 is about 2056.8733553625. The cubic root of 4230728 is about 161.7353806222.

The spelling of 4230728 in words is "four million, two hundred thirty thousand, seven hundred twenty-eight".