20443041 has 12 divisors (see below), whose sum is σ = 29834532. Its totient is φ = 13487616.

The previous prime is 20443039. The next prime is 20443081. The reversal of 20443041 is 14034402.

It can be written as a sum of positive squares in 2 ways, for example, as 8910225 + 11532816 = 2985^2 + 3396^2 .

It is not a de Polignac number, because 20443041 - 2¹ = 20443039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20443081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10836 + ... + 12581.

It is an arithmetic number, because the mean of its divisors is an integer number (2486211).

Almost surely, 2^20443041 is an apocalyptic number.

It is an amenable number.

20443041 is a deficient number, since it is larger than the sum of its proper divisors (9391491).

20443041 is a wasteful number, since it uses less digits than its factorization.

20443041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23520 (or 23517 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20443041 is about 4521.3981244743. The cubic root of 20443041 is about 273.4314716342.

Adding to 20443041 its reverse (14034402), we get a palindrome (34477443).

The spelling of 20443041 in words is "twenty million, four hundred forty-three thousand, forty-one".