9915802272 has 120 divisors (see below), whose sum is σ = 29950553556. Its totient is φ = 3215904768.

The previous prime is 9915802223. The next prime is 9915802349. The reversal of 9915802272 is 2722085199.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9666035856 + 249766416 = 98316^2 + 15804^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44208 + ... + 147600.

Almost surely, 2^9915802272 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 9915802272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14975276778).

9915802272 is an abundant number, since it is smaller than the sum of its proper divisors (20034751284).

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

9915802272 is a wasteful number, since it uses less digits than its factorization.

9915802272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103452 (or 103435 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 9915802272 is about 99578.1214524556. The cubic root of 9915802272 is about 2148.3710229544.

The spelling of 9915802272 in words is "nine billion, nine hundred fifteen million, eight hundred two thousand, two hundred seventy-two".