9107989728 has 48 divisors (see below), whose sum is σ = 24196548096. Its totient is φ = 2999415680.

The previous prime is 9107989721. The next prime is 9107989729. The reversal of 9107989728 is 8279897019.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9107989721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563568 + ... + 579503.

It is an arithmetic number, because the mean of its divisors is an integer number (504094752).

Almost surely, 2^9107989728 is an apocalyptic number.

It is an amenable number.

9107989728 is an abundant number, since it is smaller than the sum of its proper divisors (15088558368).

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

9107989728 is a wasteful number, since it uses less digits than its factorization.

9107989728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143167 (or 1143159 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 60.

The square root of 9107989728 is about 95435.7885072471. The cubic root of 9107989728 is about 2088.3703120306.

The spelling of 9107989728 in words is "nine billion, one hundred seven million, nine hundred eighty-nine thousand, seven hundred twenty-eight".