11331840 has 144 divisors (see below), whose sum is σ = 39146688. Its totient is φ = 2777088.

The previous prime is 11331823. The next prime is 11331851. The reversal of 11331840 is 4813311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49807 + ... + 50033.

It is an arithmetic number, because the mean of its divisors is an integer number (271852).

Almost surely, 2^11331840 is an apocalyptic number.

11331840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11331840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19573344).

11331840 is an abundant number, since it is smaller than the sum of its proper divisors (27814848).

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

11331840 is a wasteful number, since it uses less digits than its factorization.

11331840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 11331840 is about 3366.2798457645. The cubic root of 11331840 is about 224.6122705036.

The spelling of 11331840 in words is "eleven million, three hundred thirty-one thousand, eight hundred forty".