2129238 has 24 divisors (see below), whose sum is σ = 4773600. Its totient is φ = 685104.

The previous prime is 2129227. The next prime is 2129261. The reversal of 2129238 is 8329212.

It is a happy number.

2129238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1518 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (198900).

2^2129238 is an apocalyptic number.

2129238 is an abundant number, since it is smaller than the sum of its proper divisors (2644362).

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

2129238 is a wasteful number, since it uses less digits than its factorization.

2129238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116 (or 4113 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2129238 is about 1459.1908716820. The cubic root of 2129238 is about 128.6494901618.

The spelling of 2129238 in words is "two million, one hundred twenty-nine thousand, two hundred thirty-eight".