2587081840 has 40 divisors (see below), whose sum is σ = 6874247520. Its totient is φ = 886999296.

The previous prime is 2587081759. The next prime is 2587081877. The reversal of 2587081840 is 481807852.

2587081840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2309335 + ... + 2310454.

It is an arithmetic number, because the mean of its divisors is an integer number (171856188).

Almost surely, 2^2587081840 is an apocalyptic number.

2587081840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2587081840 is an abundant number, since it is smaller than the sum of its proper divisors (4287165680).

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

2587081840 is a wasteful number, since it uses less digits than its factorization.

2587081840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619809 (or 4619803 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 2587081840 is about 50863.3644188034. The cubic root of 2587081840 is about 1372.7877311341.

The spelling of 2587081840 in words is "two billion, five hundred eighty-seven million, eighty-one thousand, eight hundred forty".