7985728 has 14 divisors (see below), whose sum is σ = 15846806. Its totient is φ = 3992832.

The previous prime is 7985713. The next prime is 7985729. The reversal of 7985728 is 8275897.

It can be written as a sum of positive squares in only one way, i.e., 7225344 + 760384 = 2688^2 + 872^2 .

It is not an unprimeable number, because it can be changed into a prime (7985729) by changing a digit.

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, 62325 + ... + 62452.

Almost surely, 2^7985728 is an apocalyptic number.

It is an amenable number.

7985728 is a deficient number, since it is larger than the sum of its proper divisors (7861078).

7985728 is a wasteful number, since it uses less digits than its factorization.

7985728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124789 (or 124779 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The square root of 7985728 is about 2825.9030415073. The cubic root of 7985728 is about 199.8809958708.

It can be divided in two parts, 7 and 985728, that multiplied together give a palindrome (6900096).

The spelling of 7985728 in words is "seven million, nine hundred eighty-five thousand, seven hundred twenty-eight".