2143888 has 10 divisors (see below), whose sum is σ = 4153814. Its totient is φ = 1071936.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143888 is 8883412.

It can be written as a sum of positive squares in only one way, i.e., 1774224 + 369664 = 1332^2 + 608^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66981 + ... + 67012.

2^2143888 is an apocalyptic number.

It is an amenable number.

2143888 is a deficient number, since it is larger than the sum of its proper divisors (2009926).

2143888 is a wasteful number, since it uses less digits than its factorization.

2143888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134001 (or 133995 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 2143888 is about 1464.2021718328. The cubic root of 2143888 is about 128.9438691759.

Subtracting from 2143888 its product of digits (12288), we obtain a square (2131600 = 1460²).

The spelling of 2143888 in words is "two million, one hundred forty-three thousand, eight hundred eighty-eight".