2117438 has 8 divisors (see below), whose sum is σ = 3219888. Its totient is φ = 1044144.

The previous prime is 2117431. The next prime is 2117441. The reversal of 2117438 is 8347112.

2117438 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 d-powerful number, because it can be written as 2 + 1 + 1 + 7³ + 4⁴ + 3⁹ + 8⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117431) 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, 7106 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (402486).

2^2117438 is an apocalyptic number.

2117438 is a deficient number, since it is larger than the sum of its proper divisors (1102450).

2117438 is a wasteful number, since it uses less digits than its factorization.

2117438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14578.

The product of its digits is 1344, while the sum is 26.

The square root of 2117438 is about 1455.1419174775. The cubic root of 2117438 is about 128.4113960699.

It can be divided in two parts, 21174 and 38, that added together give a palindrome (21212).

The spelling of 2117438 in words is "two million, one hundred seventeen thousand, four hundred thirty-eight".