20000911 has 8 divisors (see below), whose sum is σ = 22888224. Its totient is φ = 17121120.

The previous prime is 20000909. The next prime is 20000917. The reversal of 20000911 is 11900002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000911 - 2¹ = 20000909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000891 and 20000900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000917) 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 7 ways as a sum of consecutive naturals, for example, 6081 + ... + 8773.

It is an arithmetic number, because the mean of its divisors is an integer number (2861028).

Almost surely, 2^20000911 is an apocalyptic number.

20000911 is a deficient number, since it is larger than the sum of its proper divisors (2887313).

20000911 is a wasteful number, since it uses less digits than its factorization.

20000911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 20000911 is about 4472.2378067361. The cubic root of 20000911 is about 271.4458829877.

Adding to 20000911 its reverse (11900002), we get a palindrome (31900913).

The spelling of 20000911 in words is "twenty million, nine hundred eleven", and thus it is an aban number.