2128397 has 8 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 1965040.

The previous prime is 2128391. The next prime is 2128403. The reversal of 2128397 is 7938212.

It is an interprime number because it is at equal distance from previous prime (2128391) and next prime (2128403).

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

It is not a de Polignac number, because 2128397 - 2⁴ = 2128381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128391) 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, 929 + ... + 2262.

It is an arithmetic number, because the mean of its divisors is an integer number (287280).

2^2128397 is an apocalyptic number.

It is an amenable number.

2128397 is a deficient number, since it is larger than the sum of its proper divisors (169843).

2128397 is a wasteful number, since it uses less digits than its factorization.

2128397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243.

The product of its digits is 6048, while the sum is 32.

The square root of 2128397 is about 1458.9026698173. The cubic root of 2128397 is about 128.6325500688.

The spelling of 2128397 in words is "two million, one hundred twenty-eight thousand, three hundred ninety-seven".