2128197 has 8 divisors (see below), whose sum is σ = 2845440. Its totient is φ = 1414880.

The previous prime is 2128183. The next prime is 2128201. The reversal of 2128197 is 7918212.

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

It is a cyclic number.

It is not a de Polignac number, because 2128197 - 2¹¹ = 2126149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128157) 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, 697 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (355680).

2^2128197 is an apocalyptic number.

It is an amenable number.

2128197 is a deficient number, since it is larger than the sum of its proper divisors (717243).

2128197 is a wasteful number, since it uses less digits than its factorization.

2128197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963.

The product of its digits is 2016, while the sum is 30.

The square root of 2128197 is about 1458.8341235384. The cubic root of 2128197 is about 128.6285208525.

The spelling of 2128197 in words is "two million, one hundred twenty-eight thousand, one hundred ninety-seven".