2840109220 has 36 divisors (see below), whose sum is σ = 6458315220. Its totient is φ = 1048654464.

The previous prime is 2840109197. The next prime is 2840109221. The reversal of 2840109220 is 229010482.

It can be written as a sum of positive squares in 6 ways, for example, as 924646464 + 1915462756 = 30408^2 + 43766^2 .

It is not an unprimeable number, because it can be changed into a prime (2840109221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 416755 + ... + 423514.

It is an arithmetic number, because the mean of its divisors is an integer number (179397645).

Almost surely, 2^2840109220 is an apocalyptic number.

2840109220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2840109220 is an abundant number, since it is smaller than the sum of its proper divisors (3618206000).

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

2840109220 is a wasteful number, since it uses less digits than its factorization.

2840109220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840304 (or 840289 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2840109220 is about 53292.6751064347. The cubic root of 2840109220 is about 1416.1579038321.

The spelling of 2840109220 in words is "two billion, eight hundred forty million, one hundred nine thousand, two hundred twenty".