9987288 has 32 divisors (see below), whose sum is σ = 25344960. Its totient is φ = 3278880.

The previous prime is 9987287. The next prime is 9987311. The reversal of 9987288 is 8827899.

It is a self number, because there is not a number n which added to its sum of digits gives 9987288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987283) 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, 1498 + ... + 4713.

It is an arithmetic number, because the mean of its divisors is an integer number (792030).

Almost surely, 2^9987288 is an apocalyptic number.

It is an amenable number.

9987288 is an abundant number, since it is smaller than the sum of its proper divisors (15357672).

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

9987288 is a wasteful number, since it uses less digits than its factorization.

9987288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6283 counting only the distinct ones).

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

The square root of 9987288 is about 3160.2670773212. The cubic root of 9987288 is about 215.3521397137.

The spelling of 9987288 in words is "nine million, nine hundred eighty-seven thousand, two hundred eighty-eight".