9988872 has 32 divisors (see below), whose sum is σ = 25385280. Its totient is φ = 3274560.

The previous prime is 9988817. The next prime is 9988873. The reversal of 9988872 is 2788899.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9988873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1948 + ... + 4875.

It is an arithmetic number, because the mean of its divisors is an integer number (793290).

Almost surely, 2^9988872 is an apocalyptic number.

It is an amenable number.

9988872 is an abundant number, since it is smaller than the sum of its proper divisors (15396408).

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

9988872 is a wasteful number, since it uses less digits than its factorization.

9988872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6889 counting only the distinct ones).

The product of its digits is 580608, while the sum is 51.

The square root of 9988872 is about 3160.5176791152. The cubic root of 9988872 is about 215.3635241775.

It can be divided in two parts, 998 and 8872, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 9988872 in words is "nine million, nine hundred eighty-eight thousand, eight hundred seventy-two".