998044320 has 384 divisors, whose sum is σ = 3934877184. Its totient is φ = 207028224.

The previous prime is 998044277. The next prime is 998044339. The reversal of 998044320 is 23440899.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3188484 + ... + 3188796.

It is an arithmetic number, because the mean of its divisors is an integer number (10247076).

Almost surely, 2^998044320 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 998044320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967438592).

998044320 is an abundant number, since it is smaller than the sum of its proper divisors (2936832864).

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

998044320 is a wasteful number, since it uses less digits than its factorization.

998044320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 998044320 is about 31591.8394526181. The cubic root of 998044320 is about 999.3476812394.

The spelling of 998044320 in words is "nine hundred ninety-eight million, forty-four thousand, three hundred twenty".