9808812 has 36 divisors (see below), whose sum is σ = 26703040. Its totient is φ = 3017952.

The previous prime is 9808783. The next prime is 9808823. The reversal of 9808812 is 2188089.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10012 + ... + 10947.

Almost surely, 2^9808812 is an apocalyptic number.

It is an amenable number.

9808812 is an abundant number, since it is smaller than the sum of its proper divisors (16894228).

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

9808812 is a wasteful number, since it uses less digits than its factorization.

9808812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20982 (or 20977 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 9808812 is about 3131.9022973267. The cubic root of 9808812 is about 214.0616179160.

The spelling of 9808812 in words is "nine million, eight hundred eight thousand, eight hundred twelve".