2689243056 has 120 divisors (see below), whose sum is σ = 8226152064. Its totient is φ = 816445440.

The previous prime is 2689243027. The next prime is 2689243079. The reversal of 2689243056 is 6503429862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58170 + ... + 93606.

Almost surely, 2^2689243056 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 2689243056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4113076032).

2689243056 is an abundant number, since it is smaller than the sum of its proper divisors (5536909008).

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

2689243056 is a wasteful number, since it uses less digits than its factorization.

2689243056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35499 (or 35490 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2689243056 is about 51857.9121831953. The cubic root of 2689243056 is about 1390.6249550720.

The spelling of 2689243056 in words is "two billion, six hundred eighty-nine million, two hundred forty-three thousand, fifty-six".