2008643928 has 16 divisors (see below), whose sum is σ = 5021609880. Its totient is φ = 669547968.

The previous prime is 2008643927. The next prime is 2008643933. The reversal of 2008643928 is 8293468002.

It is a self number, because there is not a number n which added to its sum of digits gives 2008643928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2008643921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41846725 + ... + 41846772.

Almost surely, 2^2008643928 is an apocalyptic number.

It is an amenable number.

2008643928 is an abundant number, since it is smaller than the sum of its proper divisors (3012965952).

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

2008643928 is a wasteful number, since it uses less digits than its factorization.

2008643928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83693506 (or 83693502 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2008643928 is about 44817.8974071743. The cubic root of 2008643928 is about 1261.7335523474.

The spelling of 2008643928 in words is "two billion, eight million, six hundred forty-three thousand, nine hundred twenty-eight".