2772855764 has 48 divisors (see below), whose sum is σ = 5770396800. Its totient is φ = 1140698496.

The previous prime is 2772855719. The next prime is 2772855779. The reversal of 2772855764 is 4675582772.

2772855764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130607 + ... + 150345.

It is an arithmetic number, because the mean of its divisors is an integer number (120216600).

Almost surely, 2^2772855764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2772855764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2885198400).

2772855764 is an abundant number, since it is smaller than the sum of its proper divisors (2997541036).

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

2772855764 is a wasteful number, since it uses less digits than its factorization.

2772855764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19952 (or 19950 counting only the distinct ones).

The product of its digits is 6585600, while the sum is 53.

The square root of 2772855764 is about 52657.9126437803. The cubic root of 2772855764 is about 1404.8903405166.

The spelling of 2772855764 in words is "two billion, seven hundred seventy-two million, eight hundred fifty-five thousand, seven hundred sixty-four".