11144840 has 64 divisors (see below), whose sum is σ = 29237760. Its totient is φ = 3744000.

The previous prime is 11144839. The next prime is 11144863. The reversal of 11144840 is 4844111.

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, 14465 + ... + 15215.

It is an arithmetic number, because the mean of its divisors is an integer number (456840).

Almost surely, 2^11144840 is an apocalyptic number.

11144840 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 11144840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14618880).

11144840 is an abundant number, since it is smaller than the sum of its proper divisors (18092920).

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

11144840 is a wasteful number, since it uses less digits than its factorization.

11144840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 11144840 is about 3338.3888329552. The cubic root of 11144840 is about 223.3698809028.

Adding to 11144840 its reverse (4844111), we get a palindrome (15988951).

The spelling of 11144840 in words is "eleven million, one hundred forty-four thousand, eight hundred forty".