9400384728 has 48 divisors (see below), whose sum is σ = 29096430480. Its totient is φ = 2685824064.

The previous prime is 9400384723. The next prime is 9400384759. The reversal of 9400384728 is 8274830049.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9400384723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9325275 + ... + 9326282.

It is an arithmetic number, because the mean of its divisors is an integer number (606175635).

Almost surely, 2^9400384728 is an apocalyptic number.

It is an amenable number.

9400384728 is an abundant number, since it is smaller than the sum of its proper divisors (19696045752).

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

9400384728 is a wasteful number, since it uses less digits than its factorization.

9400384728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18651576 (or 18651569 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 9400384728 is about 96955.5812111918. The cubic root of 9400384728 is about 2110.4830866810.

The spelling of 9400384728 in words is "nine billion, four hundred million, three hundred eighty-four thousand, seven hundred twenty-eight".