9990828 has 36 divisors (see below), whose sum is σ = 25404288. Its totient is φ = 3310560.

The previous prime is 9990821. The next prime is 9990833. The reversal of 9990828 is 8280999.

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

It is not an unprimeable number, because it can be changed into a prime (9990821) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6150 + ... + 7602.

Almost surely, 2^9990828 is an apocalyptic number.

It is an amenable number.

9990828 is an abundant number, since it is smaller than the sum of its proper divisors (15413460).

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

9990828 is a wasteful number, since it uses less digits than its factorization.

9990828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 9990828 is about 3160.8271069453. The cubic root of 9990828 is about 215.3775806049.

The spelling of 9990828 in words is "nine million, nine hundred ninety thousand, eight hundred twenty-eight".