9931072 has 28 divisors (see below), whose sum is σ = 20746720. Its totient is φ = 4703616.

The previous prime is 9931063. The next prime is 9931093. The reversal of 9931072 is 2701399.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2868 + ... + 5299.

Almost surely, 2^9931072 is an apocalyptic number.

It is an amenable number.

9931072 is an abundant number, since it is smaller than the sum of its proper divisors (10815648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9931072 is a wasteful number, since it uses less digits than its factorization.

9931072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8198 (or 8188 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 9931072 is about 3151.3603411860. The cubic root of 9931072 is about 214.9473243948.

The spelling of 9931072 in words is "nine million, nine hundred thirty-one thousand, seventy-two".