8218220450 has 48 divisors (see below), whose sum is σ = 16684289280. Its totient is φ = 2986872000.

The previous prime is 8218220411. The next prime is 8218220503. The reversal of 8218220450 is 540228128.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1769231 + ... + 1773869.

It is an arithmetic number, because the mean of its divisors is an integer number (347589360).

Almost surely, 2^8218220450 is an apocalyptic number.

8218220450 is an abundant number, since it is smaller than the sum of its proper divisors (8466068830).

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

8218220450 is a wasteful number, since it uses less digits than its factorization.

8218220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7883 (or 7878 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 8218220450 is about 90654.4011617748. The cubic root of 8218220450 is about 2018.0221507448.

Adding to 8218220450 its reverse (540228128), we get a palindrome (8758448578).

The spelling of 8218220450 in words is "eight billion, two hundred eighteen million, two hundred twenty thousand, four hundred fifty".