9861288 has 32 divisors (see below), whose sum is σ = 24766560. Its totient is φ = 3272000.

The previous prime is 9861253. The next prime is 9861301. The reversal of 9861288 is 8821689.

It is an unprimeable number.

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, 5206 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^9861288 is an apocalyptic number.

It is an amenable number.

9861288 is an abundant number, since it is smaller than the sum of its proper divisors (14905272).

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

9861288 is a wasteful number, since it uses less digits than its factorization.

9861288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1893 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 9861288 is about 3140.2687783054. The cubic root of 9861288 is about 214.4426740815.

The spelling of 9861288 in words is "nine million, eight hundred sixty-one thousand, two hundred eighty-eight".