2688930780 has 48 divisors (see below), whose sum is σ = 7541044224. Its totient is φ = 715901760.

The previous prime is 2688930719. The next prime is 2688930791. The reversal of 2688930780 is 870398862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2349 + ... + 73371.

It is an arithmetic number, because the mean of its divisors is an integer number (157105088).

Almost surely, 2^2688930780 is an apocalyptic number.

2688930780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2688930780 is an abundant number, since it is smaller than the sum of its proper divisors (4852113444).

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

2688930780 is a wasteful number, since it uses less digits than its factorization.

2688930780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71666 (or 71664 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 2688930780 is about 51854.9012148321. The cubic root of 2688930780 is about 1390.5711263428.

The spelling of 2688930780 in words is "two billion, six hundred eighty-eight million, nine hundred thirty thousand, seven hundred eighty".