8243727144 has 32 divisors (see below), whose sum is σ = 21694020000. Its totient is φ = 2603282112.

The previous prime is 8243727139. The next prime is 8243727157. The reversal of 8243727144 is 4417273428.

It is a junction number, because it is equal to n+sod(n) for n = 8243727096 and 8243727105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9038719 + ... + 9039630.

It is an arithmetic number, because the mean of its divisors is an integer number (677938125).

Almost surely, 2^8243727144 is an apocalyptic number.

It is an amenable number.

8243727144 is an abundant number, since it is smaller than the sum of its proper divisors (13450292856).

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

8243727144 is a wasteful number, since it uses less digits than its factorization.

8243727144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18078377 (or 18078373 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 8243727144 is about 90794.9731207626. The cubic root of 8243727144 is about 2020.1077568893.

The spelling of 8243727144 in words is "eight billion, two hundred forty-three million, seven hundred twenty-seven thousand, one hundred forty-four".