2128449 has 8 divisors (see below), whose sum is σ = 2856640. Its totient is φ = 1409616.

The previous prime is 2128447. The next prime is 2128453. The reversal of 2128449 is 9448212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2128449 - 2¹ = 2128447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789 + ... + 2730.

It is an arithmetic number, because the mean of its divisors is an integer number (357080).

2^2128449 is an apocalyptic number.

It is an amenable number.

2128449 is a deficient number, since it is larger than the sum of its proper divisors (728191).

2128449 is a wasteful number, since it uses less digits than its factorization.

2128449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679.

The product of its digits is 4608, while the sum is 30.

The square root of 2128449 is about 1458.9204913223. The cubic root of 2128449 is about 128.6335976237.

The spelling of 2128449 in words is "two million, one hundred twenty-eight thousand, four hundred forty-nine".