9689128 has 8 divisors (see below), whose sum is σ = 18167130. Its totient is φ = 4844560.

The previous prime is 9689123. The next prime is 9689131. The reversal of 9689128 is 8219869.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 459684 = 3038^2 + 678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9689123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605563 + ... + 605578.

Almost surely, 2^9689128 is an apocalyptic number.

It is an amenable number.

9689128 is a deficient number, since it is larger than the sum of its proper divisors (8478002).

9689128 is a wasteful number, since it uses less digits than its factorization.

9689128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211147 (or 1211143 counting only the distinct ones).

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

The square root of 9689128 is about 3112.7364167240. The cubic root of 9689128 is about 213.1874154073.

The spelling of 9689128 in words is "nine million, six hundred eighty-nine thousand, one hundred twenty-eight".