2158234 has 8 divisors (see below), whose sum is σ = 3486420. Its totient is φ = 996096.

The previous prime is 2158231. The next prime is 2158237. The reversal of 2158234 is 4328512.

2158234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2158231) and next prime (2158237).

It can be written as a sum of positive squares in 2 ways, for example, as 2117025 + 41209 = 1455^2 + 203^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2158199 and 2158208.

It is not an unprimeable number, because it can be changed into a prime (2158231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41479 + ... + 41530.

2^2158234 is an apocalyptic number.

2158234 is a deficient number, since it is larger than the sum of its proper divisors (1328186).

2158234 is a wasteful number, since it uses less digits than its factorization.

2158234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83024.

The product of its digits is 1920, while the sum is 25.

The square root of 2158234 is about 1469.0929174154. The cubic root of 2158234 is about 129.2308427997.

The spelling of 2158234 in words is "two million, one hundred fifty-eight thousand, two hundred thirty-four".