9231900720 has 80 divisors (see below), whose sum is σ = 32707311360. Its totient is φ = 2110148352.

The previous prime is 9231900707. The next prime is 9231900749. The reversal of 9231900720 is 270091329.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745910 + ... + 2749269.

It is an arithmetic number, because the mean of its divisors is an integer number (408841392).

Almost surely, 2^9231900720 is an apocalyptic number.

It is an amenable number.

9231900720 is an abundant number, since it is smaller than the sum of its proper divisors (23475410640).

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

9231900720 is a wasteful number, since it uses less digits than its factorization.

9231900720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495202 (or 5495196 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 9231900720 is about 96082.7805592657. The cubic root of 9231900720 is about 2097.7982002089.

The spelling of 9231900720 in words is "nine billion, two hundred thirty-one million, nine hundred thousand, seven hundred twenty".