9631722240 has 648 divisors, whose sum is σ = 39367587168. Its totient is φ = 2167603200.

The previous prime is 9631722239. The next prime is 9631722257. The reversal of 9631722240 is 422271369.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9631722195 and 9631722204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63786165 + ... + 63786315.

Almost surely, 2^9631722240 is an apocalyptic number.

9631722240 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 9631722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19683793584).

9631722240 is an abundant number, since it is smaller than the sum of its proper divisors (29735864928).

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

9631722240 is a wasteful number, since it uses less digits than its factorization.

9631722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 9631722240 is about 98141.3380793231. The cubic root of 9631722240 is about 2127.6555305764.

The spelling of 9631722240 in words is "nine billion, six hundred thirty-one million, seven hundred twenty-two thousand, two hundred forty".