20334091 has 4 divisors (see below), whose sum is σ = 21530232. Its totient is φ = 19137952.

The previous prime is 20334089. The next prime is 20334101. The reversal of 20334091 is 19043302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20334091 - 2¹ = 20334089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334071) 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, 598045 + ... + 598078.

It is an arithmetic number, because the mean of its divisors is an integer number (5382558).

Almost surely, 2^20334091 is an apocalyptic number.

20334091 is a deficient number, since it is larger than the sum of its proper divisors (1196141).

20334091 is a wasteful number, since it uses less digits than its factorization.

20334091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196140.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20334091 is about 4509.3337645377. Note that the first 3 decimals coincide. The cubic root of 20334091 is about 272.9448604351.

Adding to 20334091 its reverse (19043302), we get a palindrome (39377393).

The spelling of 20334091 in words is "twenty million, three hundred thirty-four thousand, ninety-one".