2820822820 has 24 divisors (see below), whose sum is σ = 5929983864. Its totient is φ = 1127137536.

The previous prime is 2820822799. The next prime is 2820822887. The reversal of 2820822820 is 282280282.

It can be written as a sum of positive squares in 4 ways, for example, as 648517156 + 2172305664 = 25466^2 + 46608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54939 + ... + 93058.

It is an arithmetic number, because the mean of its divisors is an integer number (247082661).

Almost surely, 2^2820822820 is an apocalyptic number.

2820822820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820822820 is an abundant number, since it is smaller than the sum of its proper divisors (3109161044).

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

2820822820 is a wasteful number, since it uses less digits than its factorization.

2820822820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148959 (or 148957 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 2820822820 is about 53111.4189228644. The cubic root of 2820822820 is about 1412.9450407501.

The spelling of 2820822820 in words is "two billion, eight hundred twenty million, eight hundred twenty-two thousand, eight hundred twenty".