9963728 has 20 divisors (see below), whose sum is σ = 19524420. Its totient is φ = 4925184.

The previous prime is 9963727. The next prime is 9963739. The reversal of 9963728 is 8273699.

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 7441984 = 1588^2 + 2728^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9963727) 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, 2075 + ... + 4922.

It is an arithmetic number, because the mean of its divisors is an integer number (976221).

Almost surely, 2^9963728 is an apocalyptic number.

It is an amenable number.

9963728 is a deficient number, since it is larger than the sum of its proper divisors (9560692).

9963728 is a wasteful number, since it uses less digits than its factorization.

9963728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094 (or 7088 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 9963728 is about 3156.5373433558. The cubic root of 9963728 is about 215.1826679057.

The spelling of 9963728 in words is "nine million, nine hundred sixty-three thousand, seven hundred twenty-eight".