8215422800 has 60 divisors (see below), whose sum is σ = 21255840060. Its totient is φ = 3033384960.

The previous prime is 8215422799. The next prime is 8215422823. The reversal of 8215422800 is 82245128.

It can be written as a sum of positive squares in 6 ways, for example, as 699919936 + 7515502864 = 26456^2 + 86692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784745 + ... + 795144.

It is an arithmetic number, because the mean of its divisors is an integer number (354264001).

Almost surely, 2^8215422800 is an apocalyptic number.

8215422800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8215422800 is an abundant number, since it is smaller than the sum of its proper divisors (13040417260).

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

8215422800 is a wasteful number, since it uses less digits than its factorization.

8215422800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579920 (or 1579909 counting only the distinct ones).

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

The square root of 8215422800 is about 90638.9695440102. The cubic root of 8215422800 is about 2017.7931327774.

Adding to 8215422800 its reverse (82245128), we get a palindrome (8297667928).

The spelling of 8215422800 in words is "eight billion, two hundred fifteen million, four hundred twenty-two thousand, eight hundred".