2128384 has 20 divisors (see below), whose sum is σ = 4253634. Its totient is φ = 1063936.

The previous prime is 2128381. The next prime is 2128387. The reversal of 2128384 is 4838212.

It is an interprime number because it is at equal distance from previous prime (2128381) and next prime (2128387).

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 278784 = 1360^2 + 528^2 .

It is not an unprimeable number, because it can be changed into a prime (2128381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567 + ... + 2590.

2^2128384 is an apocalyptic number.

It is an amenable number.

2128384 is a deficient number, since it is larger than the sum of its proper divisors (2125250).

2128384 is an frugal number, since it uses more digits than its factorization.

2128384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175 (or 4159 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 2128384 is about 1458.8982144070. The cubic root of 2128384 is about 128.6322881774.

The spelling of 2128384 in words is "two million, one hundred twenty-eight thousand, three hundred eighty-four".