9928172 has 12 divisors (see below), whose sum is σ = 17702496. Its totient is φ = 4870320.

The previous prime is 9928169. The next prime is 9928207. The reversal of 9928172 is 2718299.

It is a super-3 number, since 3×9928172³ (a number of 22 digits) contains 333 as substring.

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, 23204 + ... + 23627.

It is an arithmetic number, because the mean of its divisors is an integer number (1475208).

Almost surely, 2^9928172 is an apocalyptic number.

It is an amenable number.

9928172 is a deficient number, since it is larger than the sum of its proper divisors (7774324).

9928172 is a wasteful number, since it uses less digits than its factorization.

9928172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46888 (or 46886 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 9928172 is about 3150.9001888349. The cubic root of 9928172 is about 214.9263999023.

The spelling of 9928172 in words is "nine million, nine hundred twenty-eight thousand, one hundred seventy-two".