2688900240 has 160 divisors (see below), whose sum is σ = 9011673216. Its totient is φ = 659312640.

The previous prime is 2688900229. The next prime is 2688900241. The reversal of 2688900240 is 420098862.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2688900241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 875187 + ... + 878253.

Almost surely, 2^2688900240 is an apocalyptic number.

2688900240 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 2688900240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4505836608).

2688900240 is an abundant number, since it is smaller than the sum of its proper divisors (6322772976).

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

2688900240 is a wasteful number, since it uses less digits than its factorization.

2688900240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 2688900240 is about 51854.6067384567. The cubic root of 2688900240 is about 1390.5658617716.

The spelling of 2688900240 in words is "two billion, six hundred eighty-eight million, nine hundred thousand, two hundred forty".