20013411 has 24 divisors (see below), whose sum is σ = 29985984. Its totient is φ = 11774880.

The previous prime is 20013407. The next prime is 20013421. The reversal of 20013411 is 11431002.

It is a happy number.

It is not a de Polignac number, because 20013411 - 2² = 20013407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013421) 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 23 ways as a sum of consecutive naturals, for example, 44956 + ... + 45398.

It is an arithmetic number, because the mean of its divisors is an integer number (1249416).

Almost surely, 2^20013411 is an apocalyptic number.

20013411 is a deficient number, since it is larger than the sum of its proper divisors (9972573).

20013411 is a wasteful number, since it uses less digits than its factorization.

20013411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 494 counting only the distinct ones).

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

The square root of 20013411 is about 4473.6350991112. The cubic root of 20013411 is about 271.5024198612.

Adding to 20013411 its reverse (11431002), we get a palindrome (31444413).

The spelling of 20013411 in words is "twenty million, thirteen thousand, four hundred eleven".