9968443728 has 40 divisors (see below), whose sum is σ = 26077795200. Its totient is φ = 3280752384.

The previous prime is 9968443711. The next prime is 9968443729. The reversal of 9968443728 is 8273448699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9968443729) 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, 1310613 + ... + 1318196.

It is an arithmetic number, because the mean of its divisors is an integer number (651944880).

Almost surely, 2^9968443728 is an apocalyptic number.

It is an amenable number.

9968443728 is an abundant number, since it is smaller than the sum of its proper divisors (16109351472).

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

9968443728 is a wasteful number, since it uses less digits than its factorization.

9968443728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628899 (or 2628893 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 60.

The square root of 9968443728 is about 99842.0939684260. The cubic root of 9968443728 is about 2152.1661045163.

The spelling of 9968443728 in words is "nine billion, nine hundred sixty-eight million, four hundred forty-three thousand, seven hundred twenty-eight".