2128875 has 32 divisors (see below), whose sum is σ = 4053504. Its totient is φ = 972000.

The previous prime is 2128873. The next prime is 2128891. The reversal of 2128875 is 5788212.

It is not a de Polignac number, because 2128875 - 2¹ = 2128873 is a prime.

It is an Ulam number.

2128875 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2128871) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 2220 + ... + 3030.

It is an arithmetic number, because the mean of its divisors is an integer number (126672).

2^2128875 is an apocalyptic number.

2128875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2128875 is a deficient number, since it is larger than the sum of its proper divisors (1924629).

2128875 is an equidigital number, since it uses as much as digits as its factorization.

2128875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 826 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 2128875 is about 1459.0664823784. The cubic root of 2128875 is about 128.6421788734.

It can be divided in two parts, 2128 and 875, that added together give a palindrome (3003).

The spelling of 2128875 in words is "two million, one hundred twenty-eight thousand, eight hundred seventy-five".