11011806 has 24 divisors (see below), whose sum is σ = 25694760. Its totient is φ = 3388176.

The previous prime is 11011787. The next prime is 11011807. The reversal of 11011806 is 60811011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011807) 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 11 ways as a sum of consecutive naturals, for example, 23296 + ... + 23763.

It is an arithmetic number, because the mean of its divisors is an integer number (1070615).

Almost surely, 2^11011806 is an apocalyptic number.

11011806 is an abundant number, since it is smaller than the sum of its proper divisors (14682954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11011806 is a wasteful number, since it uses less digits than its factorization.

11011806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47080 (or 47077 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 11011806 is about 3318.4041345201. The cubic root of 11011806 is about 222.4775451816.

Adding to 11011806 its reverse (60811011), we get a palindrome (71822817).

The spelling of 11011806 in words is "eleven million, eleven thousand, eight hundred six".