9928885 has 8 divisors (see below), whose sum is σ = 11977560. Its totient is φ = 7901184.

The previous prime is 9928879. The next prime is 9928889. The reversal of 9928885 is 5888299.

It is a happy number.

9928885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1582564 + 8346321 = 1258^2 + 2889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9928885 - 2¹¹ = 9926837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180 + ... + 6109.

It is an arithmetic number, because the mean of its divisors is an integer number (1497195).

Almost surely, 2^9928885 is an apocalyptic number.

It is an amenable number.

9928885 is a deficient number, since it is larger than the sum of its proper divisors (2048675).

9928885 is a wasteful number, since it uses less digits than its factorization.

9928885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487.

The product of its digits is 414720, while the sum is 49.

The square root of 9928885 is about 3151.0133290737. The cubic root of 9928885 is about 214.9315448190.

The spelling of 9928885 in words is "nine million, nine hundred twenty-eight thousand, eight hundred eighty-five".