2771220782 has 16 divisors (see below), whose sum is σ = 4536270000. Its totient is φ = 1259216640.

The previous prime is 2771220763. The next prime is 2771220821. The reversal of 2771220782 is 2870221772.

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, 49844 + ... + 89592.

It is an arithmetic number, because the mean of its divisors is an integer number (283516875).

Almost surely, 2^2771220782 is an apocalyptic number.

2771220782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2771220782 is a deficient number, since it is larger than the sum of its proper divisors (1765049218).

2771220782 is a wasteful number, since it uses less digits than its factorization.

2771220782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42931.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 2771220782 is about 52642.3857931990. The cubic root of 2771220782 is about 1404.6141605031.

The spelling of 2771220782 in words is "two billion, seven hundred seventy-one million, two hundred twenty thousand, seven hundred eighty-two".