8220962820 has 96 divisors (see below), whose sum is σ = 26333798400. Its totient is φ = 1877169024.

The previous prime is 8220962809. The next prime is 8220962821. The reversal of 8220962820 is 282690228.

It is not an unprimeable number, because it can be changed into a prime (8220962821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426961 + ... + 445799.

It is an arithmetic number, because the mean of its divisors is an integer number (274310400).

Almost surely, 2^8220962820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8220962820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13166899200).

8220962820 is an abundant number, since it is smaller than the sum of its proper divisors (18112835580).

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

8220962820 is a wasteful number, since it uses less digits than its factorization.

8220962820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19897 (or 19895 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 8220962820 is about 90669.5253103268. The cubic root of 8220962820 is about 2018.2465930062.

The spelling of 8220962820 in words is "eight billion, two hundred twenty million, nine hundred sixty-two thousand, eight hundred twenty".