2489865240 has 32 divisors (see below), whose sum is σ = 7469596080. Its totient is φ = 663964032.

The previous prime is 2489865227. The next prime is 2489865251. The reversal of 2489865240 is 425689842.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489865240.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10374319 + ... + 10374558.

Almost surely, 2^2489865240 is an apocalyptic number.

2489865240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2489865240 is an abundant number, since it is smaller than the sum of its proper divisors (4979730840).

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

2489865240 is a wasteful number, since it uses less digits than its factorization.

2489865240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20748891 (or 20748887 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 2489865240 is about 49898.5494779157. The cubic root of 2489865240 is about 1355.3723263445.

The spelling of 2489865240 in words is "two billion, four hundred eighty-nine million, eight hundred sixty-five thousand, two hundred forty".