9805828 has 12 divisors (see below), whose sum is σ = 17752140. Its totient is φ = 4733792.

The previous prime is 9805823. The next prime is 9805879. The reversal of 9805828 is 8285089.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2930944 + 6874884 = 1712^2 + 2622^2 .

It is not an unprimeable number, because it can be changed into a prime (9805823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42151 + ... + 42382.

It is an arithmetic number, because the mean of its divisors is an integer number (1479345).

Almost surely, 2^9805828 is an apocalyptic number.

It is an amenable number.

9805828 is a deficient number, since it is larger than the sum of its proper divisors (7946312).

9805828 is a wasteful number, since it uses less digits than its factorization.

9805828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84566 (or 84564 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 9805828 is about 3131.4258733044. The cubic root of 9805828 is about 214.0399087069.

The spelling of 9805828 in words is "nine million, eight hundred five thousand, eight hundred twenty-eight".