9112789728 has 288 divisors, whose sum is σ = 31612089600. Its totient is φ = 2432083968.

The previous prime is 9112789669. The next prime is 9112789733. The reversal of 9112789728 is 8279872119.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2794563 + ... + 2797821.

It is an arithmetic number, because the mean of its divisors is an integer number (109764200).

Almost surely, 2^9112789728 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 9112789728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15806044800).

9112789728 is an abundant number, since it is smaller than the sum of its proper divisors (22499299872).

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

9112789728 is a wasteful number, since it uses less digits than its factorization.

9112789728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3363 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 9112789728 is about 95460.9329935550. The cubic root of 9112789728 is about 2088.7371114878.

The spelling of 9112789728 in words is "nine billion, one hundred twelve million, seven hundred eighty-nine thousand, seven hundred twenty-eight".