4049728 has 14 divisors (see below), whose sum is σ = 8036306. Its totient is φ = 2024832.

The previous prime is 4049711. The next prime is 4049737. The reversal of 4049728 is 8279404.

It is a happy number.

4049728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2286144 + 1763584 = 1512^2 + 1328^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4049693 and 4049702.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31575 + ... + 31702.

Almost surely, 2^4049728 is an apocalyptic number.

It is an amenable number.

4049728 is a deficient number, since it is larger than the sum of its proper divisors (3986578).

4049728 is an equidigital number, since it uses as much as digits as its factorization.

4049728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63289 (or 63279 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4049728 is about 2012.3935996718. The cubic root of 4049728 is about 159.3952168638.

The spelling of 4049728 in words is "four million, forty-nine thousand, seven hundred twenty-eight".