9272731320 has 192 divisors, whose sum is σ = 31119865920. Its totient is φ = 2392768512.

The previous prime is 9272731249. The next prime is 9272731327. The reversal of 9272731320 is 231372729.

It is a super-2 number, since 2×9272731320² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9272731327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2568957 + ... + 2572563.

It is an arithmetic number, because the mean of its divisors is an integer number (162082635).

Almost surely, 2^9272731320 is an apocalyptic number.

9272731320 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 9272731320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15559932960).

9272731320 is an abundant number, since it is smaller than the sum of its proper divisors (21847134600).

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

9272731320 is a wasteful number, since it uses less digits than its factorization.

9272731320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 9272731320 is about 96295.0223012592. The cubic root of 9272731320 is about 2100.8863469354.

The spelling of 9272731320 in words is "nine billion, two hundred seventy-two million, seven hundred thirty-one thousand, three hundred twenty".