2161238 has 16 divisors (see below), whose sum is σ = 3340656. Its totient is φ = 1048320.

The previous prime is 2161213. The next prime is 2161253. The reversal of 2161238 is 8321612.

2161238 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 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 7 ways as a sum of consecutive naturals, for example, 16433 + ... + 16563.

It is an arithmetic number, because the mean of its divisors is an integer number (208791).

2^2161238 is an apocalyptic number.

2161238 is a deficient number, since it is larger than the sum of its proper divisors (1179418).

2161238 is a wasteful number, since it uses less digits than its factorization.

2161238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 576, while the sum is 23.

The square root of 2161238 is about 1470.1149614911. The cubic root of 2161238 is about 129.2907728903.

The spelling of 2161238 in words is "two million, one hundred sixty-one thousand, two hundred thirty-eight".