11808140 has 12 divisors (see below), whose sum is σ = 24797136. Its totient is φ = 4723248.

The previous prime is 11808113. The next prime is 11808151. The reversal of 11808140 is 4180811.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 295184 + ... + 295223.

It is an arithmetic number, because the mean of its divisors is an integer number (2066428).

Almost surely, 2^11808140 is an apocalyptic number.

11808140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11808140 is an abundant number, since it is smaller than the sum of its proper divisors (12988996).

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

11808140 is a wasteful number, since it uses less digits than its factorization.

11808140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590416 (or 590414 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 11808140 is about 3436.2974260096. The cubic root of 11808140 is about 227.7161492776.

Adding to 11808140 its reverse (4180811), we get a palindrome (15988951).

The spelling of 11808140 in words is "eleven million, eight hundred eight thousand, one hundred forty".