998422800 has 240 divisors, whose sum is σ = 3330441600. Its totient is φ = 255467520.

The previous prime is 998422793. The next prime is 998422829. The reversal of 998422800 is 8224899.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5017101 + ... + 5017299.

It is an arithmetic number, because the mean of its divisors is an integer number (13876840).

Almost surely, 2^998422800 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 998422800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665220800).

998422800 is an abundant number, since it is smaller than the sum of its proper divisors (2332018800).

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

998422800 is a wasteful number, since it uses less digits than its factorization.

998422800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 998422800 is about 31597.8290393502. The cubic root of 998422800 is about 999.4739900287.

The spelling of 998422800 in words is "nine hundred ninety-eight million, four hundred twenty-two thousand, eight hundred".