2019128 has 8 divisors (see below), whose sum is σ = 3785880. Its totient is φ = 1009560.

The previous prime is 2019119. The next prime is 2019131. The reversal of 2019128 is 8219102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126188 + ... + 126203.

It is an arithmetic number, because the mean of its divisors is an integer number (473235).

2^2019128 is an apocalyptic number.

It is an amenable number.

2019128 is a deficient number, since it is larger than the sum of its proper divisors (1766752).

2019128 is a wasteful number, since it uses less digits than its factorization.

2019128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252397 (or 252393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2019128 is about 1420.9602387118. The cubic root of 2019128 is about 126.3924940797.

The spelling of 2019128 in words is "two million, nineteen thousand, one hundred twenty-eight".