2766128836 has 9 divisors (see below), whose sum is σ = 4840909549. Its totient is φ = 1383011824.

The previous prime is 2766128821. The next prime is 2766128873. The reversal of 2766128836 is 6388216672.

The square root of 2766128836 is 52594.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1311164100 + 1454964736 = 36210^2 + 38144^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2766128836.

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 2 ways as a sum of consecutive naturals, for example, 92040 + ... + 118336.

Almost surely, 2^2766128836 is an apocalyptic number.

2766128836 is the 52594-th square number.

It is an amenable number.

2766128836 is a deficient number, since it is larger than the sum of its proper divisors (2074780713).

2766128836 is an frugal number, since it uses more digits than its factorization.

2766128836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52598 (or 26299 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The cubic root of 2766128836 is about 1403.7533359685.

Multiplying 2766128836 by its sum of digits (49), we get a square (135540312964 = 368158²).

The spelling of 2766128836 in words is "two billion, seven hundred sixty-six million, one hundred twenty-eight thousand, eight hundred thirty-six".