8278790020 has 12 divisors (see below), whose sum is σ = 17385459084. Its totient is φ = 3311516000.

The previous prime is 8278790017. The next prime is 8278790027. The reversal of 8278790020 is 200978728.

It can be written as a sum of positive squares in 2 ways, for example, as 3584895876 + 4693894144 = 59874^2 + 68512^2 .

It is not an unprimeable number, because it can be changed into a prime (8278790027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206969731 + ... + 206969770.

It is an arithmetic number, because the mean of its divisors is an integer number (1448788257).

Almost surely, 2^8278790020 is an apocalyptic number.

It is an amenable number.

8278790020 is an abundant number, since it is smaller than the sum of its proper divisors (9106669064).

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

8278790020 is a wasteful number, since it uses less digits than its factorization.

8278790020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413939510 (or 413939508 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 8278790020 is about 90987.8564424946. The cubic root of 8278790020 is about 2022.9677336175.

The spelling of 8278790020 in words is "eight billion, two hundred seventy-eight million, seven hundred ninety thousand, twenty".