2143988 has 24 divisors (see below), whose sum is σ = 4678464. Its totient is φ = 835200.

The previous prime is 2143969. The next prime is 2143993. The reversal of 2143988 is 8893412.

It is a happy number.

2143988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3173 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (194936).

2^2143988 is an apocalyptic number.

2143988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2143988 is an abundant number, since it is smaller than the sum of its proper divisors (2534476).

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

2143988 is a wasteful number, since it uses less digits than its factorization.

2143988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6983 (or 6981 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 2143988 is about 1464.2363197244. The cubic root of 2143988 is about 128.9458739738.

The spelling of 2143988 in words is "two million, one hundred forty-three thousand, nine hundred eighty-eight".