4001128 has 16 divisors (see below), whose sum is σ = 7529760. Its totient is φ = 1993200.

The previous prime is 4001119. The next prime is 4001141. The reversal of 4001128 is 8211004.

It is a happy number.

4001128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 1893 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (470610).

Almost surely, 2^4001128 is an apocalyptic number.

It is an amenable number.

4001128 is a deficient number, since it is larger than the sum of its proper divisors (3528632).

4001128 is a wasteful number, since it uses less digits than its factorization.

4001128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 4001128 is about 2000.2819801218. The cubic root of 4001128 is about 158.7550253643.

The spelling of 4001128 in words is "four million, one thousand, one hundred twenty-eight".