9886927428 has 144 divisors (see below), whose sum is σ = 29608750080. Its totient is φ = 2721745152.

The previous prime is 9886927423. The next prime is 9886927447. The reversal of 9886927428 is 8247296889.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9886927423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4478701 + ... + 4480907.

It is an arithmetic number, because the mean of its divisors is an integer number (205616320).

Almost surely, 2^9886927428 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 9886927428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14804375040).

9886927428 is an abundant number, since it is smaller than the sum of its proper divisors (19721822652).

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

9886927428 is a wasteful number, since it uses less digits than its factorization.

9886927428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2861 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 9886927428 is about 99433.0298643263. The cubic root of 9886927428 is about 2146.2836413415.

The spelling of 9886927428 in words is "nine billion, eight hundred eighty-six million, nine hundred twenty-seven thousand, four hundred twenty-eight".