2587988 has 24 divisors (see below), whose sum is σ = 4923912. Its totient is φ = 1183104.

The previous prime is 2587979. The next prime is 2587993. The reversal of 2587988 is 8897852.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 2502724 = 292^2 + 1582^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8006 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (205163).

2^2587988 is an apocalyptic number.

It is an amenable number.

2587988 is a deficient number, since it is larger than the sum of its proper divisors (2335924).

2587988 is a wasteful number, since it uses less digits than its factorization.

2587988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 2587988 is about 1608.7224745120. The cubic root of 2587988 is about 137.2947991509.

The spelling of 2587988 in words is "two million, five hundred eighty-seven thousand, nine hundred eighty-eight".