2689310320 has 80 divisors (see below), whose sum is σ = 6383698560. Its totient is φ = 1053372672.

The previous prime is 2689310311. The next prime is 2689310321. The reversal of 2689310320 is 230139862.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689310321) 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, 958039 + ... + 960841.

It is an arithmetic number, because the mean of its divisors is an integer number (79796232).

Almost surely, 2^2689310320 is an apocalyptic number.

2689310320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2689310320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3191849280).

2689310320 is an abundant number, since it is smaller than the sum of its proper divisors (3694388240).

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

2689310320 is a wasteful number, since it uses less digits than its factorization.

2689310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062 (or 3056 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2689310320 is about 51858.5607204828. The cubic root of 2689310320 is about 1390.6365491916.

The spelling of 2689310320 in words is "two billion, six hundred eighty-nine million, three hundred ten thousand, three hundred twenty".