2772775720 has 64 divisors (see below), whose sum is σ = 7329450240. Its totient is φ = 930720000.

The previous prime is 2772775711. The next prime is 2772775721. The reversal of 2772775720 is 275772772.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2772775721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236656 + ... + 248095.

It is an arithmetic number, because the mean of its divisors is an integer number (114522660).

Almost surely, 2^2772775720 is an apocalyptic number.

2772775720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2772775720 is an abundant number, since it is smaller than the sum of its proper divisors (4556674520).

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

2772775720 is a wasteful number, since it uses less digits than its factorization.

2772775720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484786 (or 484782 counting only the distinct ones).

The product of its (nonzero) digits is 672280, while the sum is 46.

The square root of 2772775720 is about 52657.1526005727. The cubic root of 2772775720 is about 1404.8768220680.

The spelling of 2772775720 in words is "two billion, seven hundred seventy-two million, seven hundred seventy-five thousand, seven hundred twenty".