20041843 has 4 divisors (see below), whose sum is σ = 20236528. Its totient is φ = 19847160.

The previous prime is 20041817. The next prime is 20041859. The reversal of 20041843 is 34814002.

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 20041843 - 2⁵ = 20041811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20041873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97188 + ... + 97393.

It is an arithmetic number, because the mean of its divisors is an integer number (5059132).

Almost surely, 2^20041843 is an apocalyptic number.

20041843 is a deficient number, since it is larger than the sum of its proper divisors (194685).

20041843 is a wasteful number, since it uses less digits than its factorization.

20041843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194684.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20041843 is about 4476.8117003064. The cubic root of 20041843 is about 271.6309287593.

Adding to 20041843 its reverse (34814002), we get a palindrome (54855845).

The spelling of 20041843 in words is "twenty million, forty-one thousand, eight hundred forty-three".