2051128 has 8 divisors (see below), whose sum is σ = 3845880. Its totient is φ = 1025560.

The previous prime is 2051123. The next prime is 2051167. The reversal of 2051128 is 8211502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051123) by changing a digit.

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 as a sum of consecutive naturals, namely, 128188 + ... + 128203.

It is an arithmetic number, because the mean of its divisors is an integer number (480735).

2^2051128 is an apocalyptic number.

It is an amenable number.

2051128 is a deficient number, since it is larger than the sum of its proper divisors (1794752).

2051128 is a wasteful number, since it uses less digits than its factorization.

2051128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256397 (or 256393 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2051128 is about 1432.1759668421. The cubic root of 2051128 is about 127.0567047913.

It can be divided in two parts, 205112 and 8, that added together give a triangular number (205120 = T₆₄₀).

The spelling of 2051128 in words is "two million, fifty-one thousand, one hundred twenty-eight".