2158838 has 8 divisors (see below), whose sum is σ = 3532680. Its totient is φ = 981280.

The previous prime is 2158831. The next prime is 2158841. The reversal of 2158838 is 8388512.

2158838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 2158798 and 2158807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158831) 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, 49043 + ... + 49086.

It is an arithmetic number, because the mean of its divisors is an integer number (441585).

2^2158838 is an apocalyptic number.

2158838 is a deficient number, since it is larger than the sum of its proper divisors (1373842).

2158838 is a wasteful number, since it uses less digits than its factorization.

2158838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98142.

The product of its digits is 15360, while the sum is 35.

The square root of 2158838 is about 1469.2984720607. The cubic root of 2158838 is about 129.2428971226.

The spelling of 2158838 in words is "two million, one hundred fifty-eight thousand, eight hundred thirty-eight".