998724480 has 128 divisors (see below), whose sum is σ = 3428399520. Its totient is φ = 245833728.

The previous prime is 998724473. The next prime is 998724497. The reversal of 998724480 is 84427899.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4954 + ... + 44966.

Almost surely, 2^998724480 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 998724480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714199760).

998724480 is an abundant number, since it is smaller than the sum of its proper divisors (2429675040).

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

998724480 is a wasteful number, since it uses less digits than its factorization.

998724480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40048 (or 40036 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 998724480 is about 31602.6024244840. The cubic root of 998724480 is about 999.5746457661.

The spelling of 998724480 in words is "nine hundred ninety-eight million, seven hundred twenty-four thousand, four hundred eighty".