2820191300 has 18 divisors (see below), whose sum is σ = 6119815338. Its totient is φ = 1128076480.

The previous prime is 2820191287. The next prime is 2820191317. The reversal of 2820191300 is 31910282.

It can be written as a sum of positive squares in 3 ways, for example, as 79459396 + 2740731904 = 8914^2 + 52352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2820191300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14100857 + ... + 14101056.

It is an arithmetic number, because the mean of its divisors is an integer number (339989741).

Almost surely, 2^2820191300 is an apocalyptic number.

2820191300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820191300 is an abundant number, since it is smaller than the sum of its proper divisors (3299624038).

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

2820191300 is a wasteful number, since it uses less digits than its factorization.

2820191300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28201927 (or 28201920 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2820191300 is about 53105.4733525651. The cubic root of 2820191300 is about 1412.8395904724.

The spelling of 2820191300 in words is "two billion, eight hundred twenty million, one hundred ninety-one thousand, three hundred".