8350128420 has 24 divisors (see below), whose sum is σ = 23380359744. Its totient is φ = 2226700896.

The previous prime is 8350128389. The next prime is 8350128421. The reversal of 8350128420 is 248210538.

It is not an unprimeable number, because it can be changed into a prime (8350128421) 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, 69584344 + ... + 69584463.

It is an arithmetic number, because the mean of its divisors is an integer number (974181656).

Almost surely, 2^8350128420 is an apocalyptic number.

It is an amenable number.

8350128420 is an abundant number, since it is smaller than the sum of its proper divisors (15030231324).

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

8350128420 is a wasteful number, since it uses less digits than its factorization.

8350128420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139168819 (or 139168817 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8350128420 is about 91379.0370927600. The cubic root of 8350128420 is about 2028.7617660032.

Adding to 8350128420 its reverse (248210538), we get a palindrome (8598338958).

The spelling of 8350128420 in words is "eight billion, three hundred fifty million, one hundred twenty-eight thousand, four hundred twenty".