8278236220 has 12 divisors (see below), whose sum is σ = 17384296104. Its totient is φ = 3311294480.

The previous prime is 8278236191. The next prime is 8278236221. The reversal of 8278236220 is 226328728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278236221) 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, 206955886 + ... + 206955925.

It is an arithmetic number, because the mean of its divisors is an integer number (1448691342).

Almost surely, 2^8278236220 is an apocalyptic number.

It is an amenable number.

8278236220 is an abundant number, since it is smaller than the sum of its proper divisors (9106059884).

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

8278236220 is a wasteful number, since it uses less digits than its factorization.

8278236220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413911820 (or 413911818 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 8278236220 is about 90984.8131283458. The cubic root of 8278236220 is about 2022.9226245895.

The spelling of 8278236220 in words is "eight billion, two hundred seventy-eight million, two hundred thirty-six thousand, two hundred twenty".