9968128 has 20 divisors (see below), whose sum is σ = 19917810. Its totient is φ = 4983808.

The previous prime is 9968117. The next prime is 9968129. The reversal of 9968128 is 8218699.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8952064 + 1016064 = 2992^2 + 1008^2 .

It is not an unprimeable number, because it can be changed into a prime (9968129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9223 + ... + 10246.

Almost surely, 2^9968128 is an apocalyptic number.

It is an amenable number.

9968128 is a deficient number, since it is larger than the sum of its proper divisors (9949682).

9968128 is an equidigital number, since it uses as much as digits as its factorization.

9968128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19487 (or 19471 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 9968128 is about 3157.2342326790. The cubic root of 9968128 is about 215.2143382605.

The spelling of 9968128 in words is "nine million, nine hundred sixty-eight thousand, one hundred twenty-eight".