2659928640 has 112 divisors (see below), whose sum is σ = 8512161792. Its totient is φ = 703696896.

The previous prime is 2659928629. The next prime is 2659928659. The reversal of 2659928640 is 468299562.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 111012 + ... + 132828.

Almost surely, 2^2659928640 is an apocalyptic number.

2659928640 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 2659928640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4256080896).

2659928640 is an abundant number, since it is smaller than the sum of its proper divisors (5852233152).

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

2659928640 is a wasteful number, since it uses less digits than its factorization.

2659928640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21964 (or 21954 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 2659928640 is about 51574.4960227436. The cubic root of 2659928640 is about 1385.5535919009.

The spelling of 2659928640 in words is "two billion, six hundred fifty-nine million, nine hundred twenty-eight thousand, six hundred forty".