8447218272 has 192 divisors, whose sum is σ = 25666744320. Its totient is φ = 2699827200.

The previous prime is 8447218271. The next prime is 8447218327. The reversal of 8447218272 is 2728127448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447218271) 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, 3025197 + ... + 3027987.

It is an arithmetic number, because the mean of its divisors is an integer number (133680960).

Almost surely, 2^8447218272 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 8447218272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12833372160).

8447218272 is an abundant number, since it is smaller than the sum of its proper divisors (17219526048).

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

8447218272 is a wasteful number, since it uses less digits than its factorization.

8447218272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954 (or 2940 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 8447218272 is about 91908.7497031703. The cubic root of 8447218272 is about 2036.5945258473.

The spelling of 8447218272 in words is "eight billion, four hundred forty-seven million, two hundred eighteen thousand, two hundred seventy-two".