2689928568 has 128 divisors (see below), whose sum is σ = 7826457600. Its totient is φ = 854409600.

The previous prime is 2689928551. The next prime is 2689928569. The reversal of 2689928568 is 8658299862.

2689928568 is a `hidden beast` number, since 2 + 68 + 9 + 9 + 2 + 8 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689928569) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1544178 + ... + 1545918.

It is an arithmetic number, because the mean of its divisors is an integer number (61144200).

Almost surely, 2^2689928568 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 2689928568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3913228800).

2689928568 is an abundant number, since it is smaller than the sum of its proper divisors (5136529032).

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

2689928568 is a wasteful number, since it uses less digits than its factorization.

2689928568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090 (or 2080 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The square root of 2689928568 is about 51864.5212838218. The cubic root of 2689928568 is about 1390.7431059277.

The spelling of 2689928568 in words is "two billion, six hundred eighty-nine million, nine hundred twenty-eight thousand, five hundred sixty-eight".