2128304 has 20 divisors (see below), whose sum is σ = 4341240. Its totient is φ = 1008000.

The previous prime is 2128303. The next prime is 2128309. The reversal of 2128304 is 4038212.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2128303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197 + ... + 3804.

It is an arithmetic number, because the mean of its divisors is an integer number (217062).

2^2128304 is an apocalyptic number.

It is an amenable number.

2128304 is an abundant number, since it is smaller than the sum of its proper divisors (2212936).

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

2128304 is a wasteful number, since it uses less digits than its factorization.

2128304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028 (or 7022 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2128304 is about 1458.8707961982. The cubic root of 2128304 is about 128.6306765146.

The spelling of 2128304 in words is "two million, one hundred twenty-eight thousand, three hundred four".