2800868256 has 144 divisors (see below), whose sum is σ = 8268492960. Its totient is φ = 898275840.

The previous prime is 2800868249. The next prime is 2800868267. The reversal of 2800868256 is 6528680082.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 4100491 + ... + 4101173.

It is an arithmetic number, because the mean of its divisors is an integer number (57420090).

Almost surely, 2^2800868256 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 2800868256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4134246480).

2800868256 is an abundant number, since it is smaller than the sum of its proper divisors (5467624704).

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

2800868256 is a wasteful number, since it uses less digits than its factorization.

2800868256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 2800868256 is about 52923.2298334106. The cubic root of 2800868256 is about 1409.6054184856.

The spelling of 2800868256 in words is "two billion, eight hundred million, eight hundred sixty-eight thousand, two hundred fifty-six".