9915065928 has 128 divisors (see below), whose sum is σ = 28020844800. Its totient is φ = 3248045568.

The previous prime is 9915065921. The next prime is 9915065939. The reversal of 9915065928 is 8295605199.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9915065921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3046350 + ... + 3049602.

It is an arithmetic number, because the mean of its divisors is an integer number (218912850).

Almost surely, 2^9915065928 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 9915065928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14010422400).

9915065928 is an abundant number, since it is smaller than the sum of its proper divisors (18105778872).

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

9915065928 is a wasteful number, since it uses less digits than its factorization.

9915065928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The square root of 9915065928 is about 99574.4240656204. The cubic root of 9915065928 is about 2148.3178425451.

The spelling of 9915065928 in words is "nine billion, nine hundred fifteen million, sixty-five thousand, nine hundred twenty-eight".