9231942720 has 672 divisors, whose sum is σ = 39624975360. Its totient is φ = 1768366080.

The previous prime is 9231942697. The next prime is 9231942743. The reversal of 9231942720 is 272491329.

It is an interprime number because it is at equal distance from previous prime (9231942697) and next prime (9231942743).

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12492111 + ... + 12492849.

Almost surely, 2^9231942720 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 9231942720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19812487680).

9231942720 is an abundant number, since it is smaller than the sum of its proper divisors (30393032640).

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

9231942720 is a wasteful number, since it uses less digits than its factorization.

9231942720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 9231942720 is about 96082.9991205520. Note that the first 3 decimals coincide. The cubic root of 9231942720 is about 2097.8013814747.

The spelling of 9231942720 in words is "nine billion, two hundred thirty-one million, nine hundred forty-two thousand, seven hundred twenty".