2128445 has 8 divisors (see below), whose sum is σ = 2786400. Its totient is φ = 1547920.

The previous prime is 2128439. The next prime is 2128447. The reversal of 2128445 is 5448212.

It is a happy number.

2128445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2128445 - 2⁶ = 2128381 is a prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19295 + ... + 19404.

It is an arithmetic number, because the mean of its divisors is an integer number (348300).

2^2128445 is an apocalyptic number.

It is an amenable number.

2128445 is a deficient number, since it is larger than the sum of its proper divisors (657955).

2128445 is a wasteful number, since it uses less digits than its factorization.

2128445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38715.

The product of its digits is 2560, while the sum is 26.

The square root of 2128445 is about 1458.9191204450. The cubic root of 2128445 is about 128.6335170432.

The spelling of 2128445 in words is "two million, one hundred twenty-eight thousand, four hundred forty-five".