8238242644 has 24 divisors (see below), whose sum is σ = 14496602400. Its totient is φ = 4096387680.

The previous prime is 8238242641. The next prime is 8238242651. The reversal of 8238242644 is 4462428328.

It is a super-2 number, since 2×8238242644² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8238242644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8238242641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363422 + ... + 1369450.

It is an arithmetic number, because the mean of its divisors is an integer number (604025100).

Almost surely, 2^8238242644 is an apocalyptic number.

It is an amenable number.

8238242644 is a deficient number, since it is larger than the sum of its proper divisors (6258359756).

8238242644 is a wasteful number, since it uses less digits than its factorization.

8238242644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863 (or 7861 counting only the distinct ones).

The product of its digits is 589824, while the sum is 43.

The square root of 8238242644 is about 90764.7654324077. The cubic root of 8238242644 is about 2019.6596691615.

The spelling of 8238242644 in words is "eight billion, two hundred thirty-eight million, two hundred forty-two thousand, six hundred forty-four".