2688761320 has 48 divisors (see below), whose sum is σ = 7037426340. Its totient is φ = 921860352.

The previous prime is 2688761239. The next prime is 2688761351. The reversal of 2688761320 is 231678862.

It can be written as a sum of positive squares in 2 ways, for example, as 2452032324 + 236728996 = 49518^2 + 15386^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683949 + ... + 687868.

Almost surely, 2^2688761320 is an apocalyptic number.

2688761320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2688761320 is an abundant number, since it is smaller than the sum of its proper divisors (4348665020).

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

2688761320 is a wasteful number, since it uses less digits than its factorization.

2688761320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371842 (or 1371831 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 2688761320 is about 51853.2672066091. The cubic root of 2688761320 is about 1390.5419138475.

The spelling of 2688761320 in words is "two billion, six hundred eighty-eight million, seven hundred sixty-one thousand, three hundred twenty".