998107520 has 64 divisors (see below), whose sum is σ = 2390104800. Its totient is φ = 398573568.

The previous prime is 998107511. The next prime is 998107547. The reversal of 998107520 is 25701899.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 587312 + ... + 589008.

Almost surely, 2^998107520 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 998107520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195052400).

998107520 is an abundant number, since it is smaller than the sum of its proper divisors (1391997280).

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

998107520 is a wasteful number, since it uses less digits than its factorization.

998107520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 998107520 is about 31592.8396950955. The cubic root of 998107520 is about 999.3687749721.

The spelling of 998107520 in words is "nine hundred ninety-eight million, one hundred seven thousand, five hundred twenty".