9887880 has 128 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 2396160.

The previous prime is 9887851. The next prime is 9887881. The reversal of 9887880 is 887889.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9887881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75415 + ... + 75545.

It is an arithmetic number, because the mean of its divisors is an integer number (253935).

Almost surely, 2^9887880 is an apocalyptic number.

It is a pronic number, being equal to 3144×3145.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9887880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16251840).

9887880 is an abundant number, since it is smaller than the sum of its proper divisors (22615800).

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

9887880 is a wasteful number, since it uses less digits than its factorization.

9887880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 48.

The square root of 9887880 is about 3144.4999602481. The cubic root of 9887880 is about 214.6352568183.

It can be divided in two parts, 98 and 87880, that added together give a palindrome (87978).

The spelling of 9887880 in words is "nine million, eight hundred eighty-seven thousand, eight hundred eighty".