2806782580 has 24 divisors (see below), whose sum is σ = 6736278528. Its totient is φ = 962325408.

The previous prime is 2806782523. The next prime is 2806782617. The reversal of 2806782580 is 852876082.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2806782580.

It is a congruent number.

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, 10024084 + ... + 10024363.

It is an arithmetic number, because the mean of its divisors is an integer number (280678272).

Almost surely, 2^2806782580 is an apocalyptic number.

2806782580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2806782580 is an abundant number, since it is smaller than the sum of its proper divisors (3929495948).

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

2806782580 is a wasteful number, since it uses less digits than its factorization.

2806782580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20048463 (or 20048461 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 2806782580 is about 52979.0768133987. The cubic root of 2806782580 is about 1410.5968969867.

The spelling of 2806782580 in words is "two billion, eight hundred six million, seven hundred eighty-two thousand, five hundred eighty".