998512112 has 40 divisors (see below), whose sum is σ = 2091470304. Its totient is φ = 459074304.

The previous prime is 998512091. The next prime is 998512117. The reversal of 998512112 is 211215899.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998512117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45578 + ... + 63830.

Almost surely, 2^998512112 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 998512112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045735152).

998512112 is an abundant number, since it is smaller than the sum of its proper divisors (1092958192).

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

998512112 is a wasteful number, since it uses less digits than its factorization.

998512112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18537 (or 18531 counting only the distinct ones).

The product of its digits is 12960, while the sum is 38.

The square root of 998512112 is about 31599.2422693963. The cubic root of 998512112 is about 999.5037911508.

The spelling of 998512112 in words is "nine hundred ninety-eight million, five hundred twelve thousand, one hundred twelve".