8642204520 has 64 divisors (see below), whose sum is σ = 26164512000. Its totient is φ = 2283441408.

The previous prime is 8642204497. The next prime is 8642204533. The reversal of 8642204520 is 254022468.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317280 + ... + 343439.

It is an arithmetic number, because the mean of its divisors is an integer number (408820500).

Almost surely, 2^8642204520 is an apocalyptic number.

It is an amenable number.

8642204520 is an abundant number, since it is smaller than the sum of its proper divisors (17522307480).

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

8642204520 is a wasteful number, since it uses less digits than its factorization.

8642204520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660842 (or 660838 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 8642204520 is about 92963.4579821555. The cubic root of 8642204520 is about 2052.1456432160.

Adding to 8642204520 its reverse (254022468), we get a palindrome (8896226988).

The spelling of 8642204520 in words is "eight billion, six hundred forty-two million, two hundred four thousand, five hundred twenty".