998548992 has 320 divisors, whose sum is σ = 3582627840. Its totient is φ = 268075008.

The previous prime is 998548963. The next prime is 998549003. The reversal of 998548992 is 299845899.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1644753 + ... + 1645359.

It is an arithmetic number, because the mean of its divisors is an integer number (11195712).

Almost surely, 2^998548992 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 998548992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791313920).

998548992 is an abundant number, since it is smaller than the sum of its proper divisors (2584078848).

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

998548992 is a wasteful number, since it uses less digits than its factorization.

998548992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 636 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 63.

The square root of 998548992 is about 31599.8258223048. The cubic root of 998548992 is about 999.5160965419.

The spelling of 998548992 in words is "nine hundred ninety-eight million, five hundred forty-eight thousand, nine hundred ninety-two".