999986328 has 96 divisors (see below), whose sum is σ = 3023317440. Its totient is φ = 295968960.

The previous prime is 999986311. The next prime is 999986333. The reversal of 999986328 is 823689999.

999986328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19375 + ... + 48737.

It is an arithmetic number, because the mean of its divisors is an integer number (31492890).

Almost surely, 2^999986328 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 999986328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511658720).

999986328 is an abundant number, since it is smaller than the sum of its proper divisors (2023331112).

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

999986328 is a wasteful number, since it uses less digits than its factorization.

999986328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29429 (or 29422 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The square root of 999986328 is about 31622.5604276441. The cubic root of 999986328 is about 999.9954426459.

The spelling of 999986328 in words is "nine hundred ninety-nine million, nine hundred eighty-six thousand, three hundred twenty-eight".