9647078840 has 96 divisors (see below), whose sum is σ = 25278998400. Its totient is φ = 3303740160.

The previous prime is 9647078809. The next prime is 9647078863. The reversal of 9647078840 is 488707469.

It is a super-2 number, since 2×9647078840² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2077241 + ... + 2081879.

It is an arithmetic number, because the mean of its divisors is an integer number (263322900).

Almost surely, 2^9647078840 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 9647078840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12639499200).

9647078840 is an abundant number, since it is smaller than the sum of its proper divisors (15631919560).

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

9647078840 is a wasteful number, since it uses less digits than its factorization.

9647078840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725 (or 5714 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 9647078840 is about 98219.5440836497. The cubic root of 9647078840 is about 2128.7856920993.

The spelling of 9647078840 in words is "nine billion, six hundred forty-seven million, seventy-eight thousand, eight hundred forty".