9978852384 has 288 divisors, whose sum is σ = 30301060608. Its totient is φ = 3110400000.

The previous prime is 9978852347. The next prime is 9978852397. The reversal of 9978852384 is 4832588799.

It is a tau number, because it is divible by the number of its divisors (288).

Its product of digits (34836480) is a multiple of the sum of its prime factors (432).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39756259 + ... + 39756509.

It is an arithmetic number, because the mean of its divisors is an integer number (105212016).

Almost surely, 2^9978852384 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 9978852384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15150530304).

9978852384 is an abundant number, since it is smaller than the sum of its proper divisors (20322208224).

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

9978852384 is a wasteful number, since it uses less digits than its factorization.

9978852384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 421 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The square root of 9978852384 is about 99894.2059581035. The cubic root of 9978852384 is about 2152.9149129551.

The spelling of 9978852384 in words is "nine billion, nine hundred seventy-eight million, eight hundred fifty-two thousand, three hundred eighty-four".