9345539728 has 80 divisors (see below), whose sum is σ = 21803683840. Its totient is φ = 3790800000.

The previous prime is 9345539717. The next prime is 9345539741. The reversal of 9345539728 is 8279355439.

It is a super-2 number, since 2×9345539728² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4150603 + ... + 4152853.

It is an arithmetic number, because the mean of its divisors is an integer number (272546048).

Almost surely, 2^9345539728 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 9345539728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10901841920).

9345539728 is an abundant number, since it is smaller than the sum of its proper divisors (12458144112).

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

9345539728 is a wasteful number, since it uses less digits than its factorization.

9345539728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236 (or 4230 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 55.

The square root of 9345539728 is about 96672.3317604370. The cubic root of 9345539728 is about 2106.3706562585.

The spelling of 9345539728 in words is "nine billion, three hundred forty-five million, five hundred thirty-nine thousand, seven hundred twenty-eight".