2722799856 has 80 divisors (see below), whose sum is σ = 8202848000. Its totient is φ = 777938112.

The previous prime is 2722799839. The next prime is 2722799857. The reversal of 2722799856 is 6589972272.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2722799796 and 2722799805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722799857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66226 + ... + 99153.

It is an arithmetic number, because the mean of its divisors is an integer number (102535600).

Almost surely, 2^2722799856 is an apocalyptic number.

It is an amenable number.

2722799856 is an abundant number, since it is smaller than the sum of its proper divisors (5480048144).

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

2722799856 is a wasteful number, since it uses less digits than its factorization.

2722799856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165411 (or 165391 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The square root of 2722799856 is about 52180.4547316330. The cubic root of 2722799856 is about 1396.3852079939.

The spelling of 2722799856 in words is "two billion, seven hundred twenty-two million, seven hundred ninety-nine thousand, eight hundred fifty-six".