998138176 has 112 divisors (see below), whose sum is σ = 2380951296. Its totient is φ = 405909504.

The previous prime is 998138171. The next prime is 998138203. The reversal of 998138176 is 671831899.

It is a happy number.

998138176 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998138171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617420 + ... + 1618036.

Almost surely, 2^998138176 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 998138176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190475648).

998138176 is an abundant number, since it is smaller than the sum of its proper divisors (1382813120).

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

998138176 is a wasteful number, since it uses less digits than its factorization.

998138176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 806 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The square root of 998138176 is about 31593.3248645976. The cubic root of 998138176 is about 999.3790064468.

The spelling of 998138176 in words is "nine hundred ninety-eight million, one hundred thirty-eight thousand, one hundred seventy-six".