9715998240 has 288 divisors, whose sum is σ = 36060111360. Its totient is φ = 2367940608.

The previous prime is 9715998197. The next prime is 9715998263. The reversal of 9715998240 is 428995179.

9715998240 is a `hidden beast` number, since 9 + 7 + 1 + 599 + 8 + 2 + 40 = 666.

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

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, 1925641 + ... + 1930679.

It is an arithmetic number, because the mean of its divisors is an integer number (125208720).

Almost surely, 2^9715998240 is an apocalyptic number.

9715998240 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 9715998240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18030055680).

9715998240 is an abundant number, since it is smaller than the sum of its proper divisors (26344113120).

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

9715998240 is a wasteful number, since it uses less digits than its factorization.

9715998240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 9715998240 is about 98569.7633151262. The cubic root of 9715998240 is about 2133.8430652625.

The spelling of 9715998240 in words is "nine billion, seven hundred fifteen million, nine hundred ninety-eight thousand, two hundred forty".