9898312320 has 512 divisors, whose sum is σ = 38144736000. Its totient is φ = 2411347968.

The previous prime is 9898312297. The next prime is 9898312321. The reversal of 9898312320 is 232138989.

9898312320 is a `hidden beast` number, since 9 + 8 + 9 + 8 + 312 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9898312321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31224802 + ... + 31225118.

Almost surely, 2^9898312320 is an apocalyptic number.

9898312320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9898312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19072368000).

9898312320 is an abundant number, since it is smaller than the sum of its proper divisors (28246423680).

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

9898312320 is a wasteful number, since it uses less digits than its factorization.

9898312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 9898312320 is about 99490.2624380899. The cubic root of 9898312320 is about 2147.1071474141.

The spelling of 9898312320 in words is "nine billion, eight hundred ninety-eight million, three hundred twelve thousand, three hundred twenty".