20411013 has 32 divisors (see below), whose sum is σ = 32369920. Its totient is φ = 11197440.

The previous prime is 20411011. The next prime is 20411029. The reversal of 20411013 is 31011402.

It is a happy number.

It is not a de Polignac number, because 20411013 - 2¹ = 20411011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20411013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411011) 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 31 ways as a sum of consecutive naturals, for example, 84573 + ... + 84813.

It is an arithmetic number, because the mean of its divisors is an integer number (1011560).

Almost surely, 2^20411013 is an apocalyptic number.

It is an amenable number.

20411013 is a deficient number, since it is larger than the sum of its proper divisors (11958907).

20411013 is a wasteful number, since it uses less digits than its factorization.

20411013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20411013 is about 4517.8549113490. The cubic root of 20411013 is about 273.2886024694.

Adding to 20411013 its reverse (31011402), we get a palindrome (51422415).

The spelling of 20411013 in words is "twenty million, four hundred eleven thousand, thirteen".