9881808 has 80 divisors (see below), whose sum is σ = 27379200. Its totient is φ = 3064320.

The previous prime is 9881803. The next prime is 9881819. The reversal of 9881808 is 8081889.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9881808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9881803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43038 + ... + 43266.

It is an arithmetic number, because the mean of its divisors is an integer number (342240).

Almost surely, 2^9881808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9881808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13689600).

9881808 is an abundant number, since it is smaller than the sum of its proper divisors (17497392).

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

9881808 is a wasteful number, since it uses less digits than its factorization.

9881808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 9881808 is about 3143.5343166570. The cubic root of 9881808 is about 214.5913130494.

The spelling of 9881808 in words is "nine million, eight hundred eighty-one thousand, eight hundred eight".