8447273572 has 24 divisors (see below), whose sum is σ = 15578200512. Its totient is φ = 3999996000.

The previous prime is 8447273561. The next prime is 8447273573. The reversal of 8447273572 is 2753727448.

It is not an unprimeable number, because it can be changed into a prime (8447273573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445254 + ... + 463837.

It is an arithmetic number, because the mean of its divisors is an integer number (649091688).

Almost surely, 2^8447273572 is an apocalyptic number.

It is an amenable number.

8447273572 is a deficient number, since it is larger than the sum of its proper divisors (7130926940).

8447273572 is a wasteful number, since it uses less digits than its factorization.

8447273572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909219 (or 909217 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 49.

The square root of 8447273572 is about 91909.0505445465. The cubic root of 8447273572 is about 2036.5989700492.

The spelling of 8447273572 in words is "eight billion, four hundred forty-seven million, two hundred seventy-three thousand, five hundred seventy-two".