20440041 has 16 divisors (see below), whose sum is σ = 28479360. Its totient is φ = 13023360.

The previous prime is 20440039. The next prime is 20440109. The reversal of 20440041 is 14004402.

It is not a de Polignac number, because 20440041 - 2¹ = 20440039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20440041.

It is not an unprimeable number, because it can be changed into a prime (20440741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7821 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (1779960).

Almost surely, 2^20440041 is an apocalyptic number.

It is an amenable number.

20440041 is a deficient number, since it is larger than the sum of its proper divisors (8039319).

20440041 is a wasteful number, since it uses less digits than its factorization.

20440041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20440041 is about 4521.0663565137. The cubic root of 20440041 is about 273.4180956962.

Adding to 20440041 its reverse (14004402), we get a palindrome (34444443).

The spelling of 20440041 in words is "twenty million, four hundred forty thousand, forty-one".