2138144 has 24 divisors (see below), whose sum is σ = 4255020. Its totient is φ = 1057536.

The previous prime is 2138137. The next prime is 2138167. The reversal of 2138144 is 4418312.

It can be written as a sum of positive squares in 2 ways, for example, as 1993744 + 144400 = 1412^2 + 380^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3182 + ... + 3794.

2^2138144 is an apocalyptic number.

It is an amenable number.

2138144 is a deficient number, since it is larger than the sum of its proper divisors (2116876).

2138144 is a wasteful number, since it uses less digits than its factorization.

2138144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 724 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 2138144 is about 1462.2393784877. The cubic root of 2138144 is about 128.8286087962.

The spelling of 2138144 in words is "two million, one hundred thirty-eight thousand, one hundred forty-four".