2687988 has 12 divisors (see below), whose sum is σ = 6272000. Its totient is φ = 895992.

The previous prime is 2687983. The next prime is 2687999. The reversal of 2687988 is 8897862.

It is a happy number.

2687988 is digitally balanced in base 5, 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 (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111988 + ... + 112011.

2^2687988 is an apocalyptic number.

It is an amenable number.

2687988 is an abundant number, since it is smaller than the sum of its proper divisors (3584012).

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

2687988 is a wasteful number, since it uses less digits than its factorization.

2687988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224006 (or 224004 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 2687988 is about 1639.5084629242. The cubic root of 2687988 is about 139.0408588888.

It can be divided in two parts, 268 and 7988, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 2687988 in words is "two million, six hundred eighty-seven thousand, nine hundred eighty-eight".