11806140 has 24 divisors (see below), whose sum is σ = 33057360. Its totient is φ = 3148288.

The previous prime is 11806139. The next prime is 11806147. The reversal of 11806140 is 4160811.

11806140 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11806147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98325 + ... + 98444.

It is an arithmetic number, because the mean of its divisors is an integer number (1377390).

Almost surely, 2^11806140 is an apocalyptic number.

11806140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11806140 is an abundant number, since it is smaller than the sum of its proper divisors (21251220).

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

11806140 is a wasteful number, since it uses less digits than its factorization.

11806140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196781 (or 196779 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 11806140 is about 3436.0064027880. The cubic root of 11806140 is about 227.7032921013.

Adding to 11806140 its reverse (4160811), we get a palindrome (15966951).

The spelling of 11806140 in words is "eleven million, eight hundred six thousand, one hundred forty".