2001128 has 16 divisors (see below), whose sum is σ = 3844260. Its totient is φ = 976000.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001128 is 8211002.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 91204 = 1382^2 + 302^2 .

It is not an unprimeable number, because it can be changed into a prime (2001127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723 + ... + 3378.

2^2001128 is an apocalyptic number.

It is an amenable number.

2001128 is a deficient number, since it is larger than the sum of its proper divisors (1843132).

2001128 is a wasteful number, since it uses less digits than its factorization.

2001128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148 (or 6144 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2001128 is about 1414.6123143816. The cubic root of 2001128 is about 126.0157870536.

The spelling of 2001128 in words is "two million, one thousand, one hundred twenty-eight".