2158338 has 64 divisors (see below), whose sum is σ = 5483520. Its totient is φ = 551232.

The previous prime is 2158333. The next prime is 2158357. The reversal of 2158338 is 8338512.

It is a happy number.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 5³ + 8⁵ + 3⁸ + 3⁹ + 8⁷ .

It is not an unprimeable number, because it can be changed into a prime (2158333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32181 + ... + 32247.

It is an arithmetic number, because the mean of its divisors is an integer number (85680).

2^2158338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2741760).

2158338 is an abundant number, since it is smaller than the sum of its proper divisors (3325182).

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

2158338 is a wasteful number, since it uses less digits than its factorization.

2158338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151.

The product of its digits is 5760, while the sum is 30.

The square root of 2158338 is about 1469.1283129802. The cubic root of 2158338 is about 129.2329185387.

The spelling of 2158338 in words is "two million, one hundred fifty-eight thousand, three hundred thirty-eight".