2128398 has 16 divisors (see below), whose sum is σ = 4394496. Its totient is φ = 686520.

The previous prime is 2128391. The next prime is 2128403. The reversal of 2128398 is 8938212.

It is a Curzon 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, 5536 + ... + 5907.

It is an arithmetic number, because the mean of its divisors is an integer number (274656).

2^2128398 is an apocalyptic number.

2128398 is an abundant number, since it is smaller than the sum of its proper divisors (2266098).

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

2128398 is a wasteful number, since it uses less digits than its factorization.

2128398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11479.

The product of its digits is 6912, while the sum is 33.

The square root of 2128398 is about 1458.9030125406. The cubic root of 2128398 is about 128.6325702143.

The spelling of 2128398 in words is "two million, one hundred twenty-eight thousand, three hundred ninety-eight".