999730224 has 120 divisors (see below), whose sum is σ = 2965435200. Its totient is φ = 313850880.

The previous prime is 999730217. The next prime is 999730247. The reversal of 999730224 is 422037999.

999730224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 999730224.

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, 168297 + ... + 174135.

It is an arithmetic number, because the mean of its divisors is an integer number (24711960).

Almost surely, 2^999730224 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 999730224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482717600).

999730224 is an abundant number, since it is smaller than the sum of its proper divisors (1965704976).

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

999730224 is a wasteful number, since it uses less digits than its factorization.

999730224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923 (or 5914 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 999730224 is about 31618.5107808701. The cubic root of 999730224 is about 999.9100665789.

The spelling of 999730224 in words is "nine hundred ninety-nine million, seven hundred thirty thousand, two hundred twenty-four".