2168128 has 28 divisors (see below), whose sum is σ = 4531360. Its totient is φ = 1026432.

The previous prime is 2168107. The next prime is 2168143. The reversal of 2168128 is 8218612.

It is a junction number, because it is equal to n+sod(n) for n = 2168096 and 2168105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325 + ... + 2107.

2^2168128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265680).

2168128 is an abundant number, since it is smaller than the sum of its proper divisors (2363232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2168128 is a wasteful number, since it uses less digits than its factorization.

2168128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814 (or 1804 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 2168128 is about 1472.4564509689. The cubic root of 2168128 is about 129.4280196079.

The spelling of 2168128 in words is "two million, one hundred sixty-eight thousand, one hundred twenty-eight".