20237841 has 12 divisors (see below), whose sum is σ = 31481268. Its totient is φ = 12453984.

The previous prime is 20237839. The next prime is 20237849. The reversal of 20237841 is 14873202.

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 18455616 = 1335^2 + 4296^2 .

It is not a de Polignac number, because 20237841 - 2¹ = 20237839 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20237849) 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 11 ways as a sum of consecutive naturals, for example, 86370 + ... + 86603.

It is an arithmetic number, because the mean of its divisors is an integer number (2623439).

Almost surely, 2^20237841 is an apocalyptic number.

It is an amenable number.

20237841 is a deficient number, since it is larger than the sum of its proper divisors (11243427).

20237841 is a wasteful number, since it uses less digits than its factorization.

20237841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172992 (or 172989 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20237841 is about 4498.6487971390. The cubic root of 20237841 is about 272.5135240041.

The spelling of 20237841 in words is "twenty million, two hundred thirty-seven thousand, eight hundred forty-one".