2587871156 has 24 divisors (see below), whose sum is σ = 4931949960. Its totient is φ = 1180979712.

The previous prime is 2587871149. The next prime is 2587871159. The reversal of 2587871156 is 6511787852.

It can be written as a sum of positive squares in 4 ways, for example, as 214622500 + 2373248656 = 14650^2 + 48716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587871159) 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 7 ways as a sum of consecutive naturals, for example, 274961 + ... + 284216.

It is an arithmetic number, because the mean of its divisors is an integer number (205497915).

Almost surely, 2^2587871156 is an apocalyptic number.

2587871156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2587871156 is a deficient number, since it is larger than the sum of its proper divisors (2344078804).

2587871156 is a wasteful number, since it uses less digits than its factorization.

2587871156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559283 (or 559281 counting only the distinct ones).

The product of its digits is 940800, while the sum is 50.

The square root of 2587871156 is about 50871.1230070656. The cubic root of 2587871156 is about 1372.9273289781.

The spelling of 2587871156 in words is "two billion, five hundred eighty-seven million, eight hundred seventy-one thousand, one hundred fifty-six".