8220146312 has 48 divisors (see below), whose sum is σ = 18174813660. Its totient is φ = 3474648576.

The previous prime is 8220146243. The next prime is 8220146321. The reversal of 8220146312 is 2136410228.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7634215876 + 585930436 = 87374^2 + 24206^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115013 + ... + 172244.

Almost surely, 2^8220146312 is an apocalyptic number.

It is an amenable number.

8220146312 is an abundant number, since it is smaller than the sum of its proper divisors (9954667348).

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

8220146312 is a wasteful number, since it uses less digits than its factorization.

8220146312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287350 (or 287339 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8220146312 is about 90665.0225390145. The cubic root of 8220146312 is about 2018.1797732154.

The spelling of 8220146312 in words is "eight billion, two hundred twenty million, one hundred forty-six thousand, three hundred twelve".