2008258640 has 20 divisors (see below), whose sum is σ = 4669201524. Its totient is φ = 803303424.

The previous prime is 2008258633. The next prime is 2008258661. The reversal of 2008258640 is 468528002.

It can be written as a sum of positive squares in 2 ways, for example, as 390931984 + 1617326656 = 19772^2 + 40216^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 2008258640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12551537 + ... + 12551696.

Almost surely, 2^2008258640 is an apocalyptic number.

2008258640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2008258640 is an abundant number, since it is smaller than the sum of its proper divisors (2660942884).

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

2008258640 is a wasteful number, since it uses less digits than its factorization.

2008258640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25103246 (or 25103240 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 2008258640 is about 44813.5988289269. The cubic root of 2008258640 is about 1261.6528740556.

The spelling of 2008258640 in words is "two billion, eight million, two hundred fifty-eight thousand, six hundred forty".