9999000828 has 48 divisors (see below), whose sum is σ = 26817252000. Its totient is φ = 3218068224.

The previous prime is 9999000827. The next prime is 9999000833. The reversal of 9999000828 is 8280009999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999000827) 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, 1593133 + ... + 1599396.

It is an arithmetic number, because the mean of its divisors is an integer number (558692750).

Almost surely, 2^9999000828 is an apocalyptic number.

It is an amenable number.

9999000828 is an abundant number, since it is smaller than the sum of its proper divisors (16818251172).

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

9999000828 is a wasteful number, since it uses less digits than its factorization.

9999000828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192571 (or 3192563 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The square root of 9999000828 is about 99995.0040152007. The cubic root of 9999000828 is about 2154.3629326146.

The spelling of 9999000828 in words is "nine billion, nine hundred ninety-nine million, eight hundred twenty-eight", and thus it is an aban number.