2786442820 has 96 divisors (see below), whose sum is σ = 6991084800. Its totient is φ = 931956480.

The previous prime is 2786442803. The next prime is 2786442821. The reversal of 2786442820 is 282446872.

It is not an unprimeable number, because it can be changed into a prime (2786442821) 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, 276307 + ... + 286213.

It is an arithmetic number, because the mean of its divisors is an integer number (72823800).

Almost surely, 2^2786442820 is an apocalyptic number.

2786442820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2786442820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3495542400).

2786442820 is an abundant number, since it is smaller than the sum of its proper divisors (4204641980).

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

2786442820 is a wasteful number, since it uses less digits than its factorization.

2786442820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978 (or 9962 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 2786442820 is about 52786.7674706455. The cubic root of 2786442820 is about 1407.1812675380.

The spelling of 2786442820 in words is "two billion, seven hundred eighty-six million, four hundred forty-two thousand, eight hundred twenty".