2805055872 has 64 divisors (see below), whose sum is σ = 7459594560. Its totient is φ = 933931520.

The previous prime is 2805055871. The next prime is 2805055901. The reversal of 2805055872 is 2785505082.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805055871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369103 + ... + 376625.

It is an arithmetic number, because the mean of its divisors is an integer number (116556165).

Almost surely, 2^2805055872 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 2805055872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3729797280).

2805055872 is an abundant number, since it is smaller than the sum of its proper divisors (4654538688).

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

2805055872 is an equidigital number, since it uses as much as digits as its factorization.

2805055872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511 (or 8499 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 2805055872 is about 52962.7781748654. The cubic root of 2805055872 is about 1410.3075753738.

The spelling of 2805055872 in words is "two billion, eight hundred five million, fifty-five thousand, eight hundred seventy-two".