990358320 has 160 divisors (see below), whose sum is σ = 3534773760. Its totient is φ = 224686080.

The previous prime is 990358309. The next prime is 990358379. The reversal of 990358320 is 23853099.

990358320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231400 + ... + 235640.

It is an arithmetic number, because the mean of its divisors is an integer number (22092336).

Almost surely, 2^990358320 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 990358320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767386880).

990358320 is an abundant number, since it is smaller than the sum of its proper divisors (2544415440).

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

990358320 is a wasteful number, since it uses less digits than its factorization.

990358320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403 (or 4397 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 990358320 is about 31469.9590085529. The cubic root of 990358320 is about 996.7757218704.

The spelling of 990358320 in words is "nine hundred ninety million, three hundred fifty-eight thousand, three hundred twenty".