2766188420 has 12 divisors (see below), whose sum is σ = 5808995724. Its totient is φ = 1106475360.

The previous prime is 2766188417. The next prime is 2766188459. The reversal of 2766188420 is 248816672.

It can be written as a sum of positive squares in 2 ways, for example, as 339443776 + 2426744644 = 18424^2 + 49262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69154691 + ... + 69154730.

It is an arithmetic number, because the mean of its divisors is an integer number (484082977).

Almost surely, 2^2766188420 is an apocalyptic number.

2766188420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2766188420 is an abundant number, since it is smaller than the sum of its proper divisors (3042807304).

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

2766188420 is a wasteful number, since it uses less digits than its factorization.

2766188420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138309430 (or 138309428 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 2766188420 is about 52594.5664493967. The cubic root of 2766188420 is about 1403.7634151132.

The spelling of 2766188420 in words is "two billion, seven hundred sixty-six million, one hundred eighty-eight thousand, four hundred twenty".