2772856216 has 16 divisors (see below), whose sum is σ = 5599036800. Its totient is φ = 1279779744.

The previous prime is 2772856211. The next prime is 2772856231. The reversal of 2772856216 is 6126582772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772856211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13330936 + ... + 13331143.

It is an arithmetic number, because the mean of its divisors is an integer number (349939800).

Almost surely, 2^2772856216 is an apocalyptic number.

2772856216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2772856216 is an abundant number, since it is smaller than the sum of its proper divisors (2826180584).

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

2772856216 is a wasteful number, since it uses less digits than its factorization.

2772856216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26662098 (or 26662094 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 2772856216 is about 52657.9169356328. The cubic root of 2772856216 is about 1404.8904168532.

The spelling of 2772856216 in words is "two billion, seven hundred seventy-two million, eight hundred fifty-six thousand, two hundred sixteen".