9881288 has 16 divisors (see below), whose sum is σ = 18582000. Its totient is φ = 4926096.

The previous prime is 9881279. The next prime is 9881299. The reversal of 9881288 is 8821889.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1403 + ... + 4661.

It is an arithmetic number, because the mean of its divisors is an integer number (1161375).

Almost surely, 2^9881288 is an apocalyptic number.

It is an amenable number.

9881288 is a deficient number, since it is larger than the sum of its proper divisors (8700712).

9881288 is a wasteful number, since it uses less digits than its factorization.

9881288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644 (or 3640 counting only the distinct ones).

The product of its digits is 73728, while the sum is 44.

The square root of 9881288 is about 3143.4516061171. The cubic root of 9881288 is about 214.5875489123.

The spelling of 9881288 in words is "nine million, eight hundred eighty-one thousand, two hundred eighty-eight".