2806711780 has 12 divisors (see below), whose sum is σ = 5894094780. Its totient is φ = 1122684704.

The previous prime is 2806711777. The next prime is 2806711783. The reversal of 2806711780 is 871176082.

It is an interprime number because it is at equal distance from previous prime (2806711777) and next prime (2806711783).

It can be written as a sum of positive squares in 2 ways, for example, as 929396196 + 1877315584 = 30486^2 + 43328^2 .

It is not an unprimeable number, because it can be changed into a prime (2806711783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70167775 + ... + 70167814.

It is an arithmetic number, because the mean of its divisors is an integer number (491174565).

Almost surely, 2^2806711780 is an apocalyptic number.

2806711780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2806711780 is an abundant number, since it is smaller than the sum of its proper divisors (3087383000).

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

2806711780 is a wasteful number, since it uses less digits than its factorization.

2806711780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140335598 (or 140335596 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 2806711780 is about 52978.4086208712. The cubic root of 2806711780 is about 1410.5850363007.

The spelling of 2806711780 in words is "two billion, eight hundred six million, seven hundred eleven thousand, seven hundred eighty".