2161328 has 20 divisors (see below), whose sum is σ = 4510128. Its totient is φ = 997440.

The previous prime is 2161319. The next prime is 2161331. The reversal of 2161328 is 8231612.

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, 4988 + ... + 5403.

2^2161328 is an apocalyptic number.

It is an amenable number.

2161328 is an abundant number, since it is smaller than the sum of its proper divisors (2348800).

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

2161328 is a wasteful number, since it uses less digits than its factorization.

2161328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10412 (or 10406 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 2161328 is about 1470.1455710235. The cubic root of 2161328 is about 129.2925675419.

The spelling of 2161328 in words is "two million, one hundred sixty-one thousand, three hundred twenty-eight".