2143887 has 16 divisors (see below), whose sum is σ = 3059712. Its totient is φ = 1330560.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143887 is 7883412.

2143887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2143887 - 2⁷ = 2143759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6312 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (191232).

2^2143887 is an apocalyptic number.

2143887 is a deficient number, since it is larger than the sum of its proper divisors (915825).

2143887 is a wasteful number, since it uses less digits than its factorization.

2143887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478.

The product of its digits is 10752, while the sum is 33.

The square root of 2143887 is about 1464.2018303499. The cubic root of 2143887 is about 128.9438491276.

The spelling of 2143887 in words is "two million, one hundred forty-three thousand, eight hundred eighty-seven".