8012797220 has 12 divisors (see below), whose sum is σ = 16826874204. Its totient is φ = 3205118880.

The previous prime is 8012797217. The next prime is 8012797253. The reversal of 8012797220 is 227972108.

It can be written as a sum of positive squares in 2 ways, for example, as 1942517476 + 6070279744 = 44074^2 + 77912^2 .

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 3 ways as a sum of consecutive naturals, for example, 200319911 + ... + 200319950.

It is an arithmetic number, because the mean of its divisors is an integer number (1402239517).

Almost surely, 2^8012797220 is an apocalyptic number.

It is an amenable number.

8012797220 is an abundant number, since it is smaller than the sum of its proper divisors (8814076984).

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

8012797220 is a wasteful number, since it uses less digits than its factorization.

8012797220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400639870 (or 400639868 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 8012797220 is about 89514.2291482198. The cubic root of 8012797220 is about 2001.0658668630.

The spelling of 8012797220 in words is "eight billion, twelve million, seven hundred ninety-seven thousand, two hundred twenty".