2776980980 has 24 divisors (see below), whose sum is σ = 5989274088. Its totient is φ = 1080770688.

The previous prime is 2776980977. The next prime is 2776981001. The reversal of 2776980980 is 890896772.

It can be written as a sum of positive squares in 4 ways, for example, as 1662355984 + 1114624996 = 40772^2 + 33386^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875599 + ... + 1877078.

It is an arithmetic number, because the mean of its divisors is an integer number (249553087).

Almost surely, 2^2776980980 is an apocalyptic number.

2776980980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2776980980 is an abundant number, since it is smaller than the sum of its proper divisors (3212293108).

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

2776980980 is a wasteful number, since it uses less digits than its factorization.

2776980980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752723 (or 3752721 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 2776980980 is about 52697.0680398824. The cubic root of 2776980980 is about 1405.5866869279.

The spelling of 2776980980 in words is "two billion, seven hundred seventy-six million, nine hundred eighty thousand, nine hundred eighty".