20041011 has 12 divisors (see below), whose sum is σ = 30651192. Its totient is φ = 12574656.

The previous prime is 20041003. The next prime is 20041031. The reversal of 20041011 is 11014002.

It is a happy number.

It is not a de Polignac number, because 20041011 - 2³ = 20041003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20040984 and 20041002.

It is not an unprimeable number, because it can be changed into a prime (20041031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65341 + ... + 65646.

It is an arithmetic number, because the mean of its divisors is an integer number (2554266).

Almost surely, 2^20041011 is an apocalyptic number.

20041011 is a deficient number, since it is larger than the sum of its proper divisors (10610181).

20041011 is a wasteful number, since it uses less digits than its factorization.

20041011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131010 (or 131007 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20041011 is about 4476.7187760680. The cubic root of 20041011 is about 271.6271699556.

Adding to 20041011 its reverse (11014002), we get a palindrome (31055013).

The spelling of 20041011 in words is "twenty million, forty-one thousand, eleven".