11165440 has 144 divisors (see below), whose sum is σ = 31935456. Its totient is φ = 3686400.

The previous prime is 11165431. The next prime is 11165443. The reversal of 11165440 is 4456111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11165443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183010 + ... + 183070.

It is an arithmetic number, because the mean of its divisors is an integer number (221774).

Almost surely, 2^11165440 is an apocalyptic number.

11165440 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 11165440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15967728).

11165440 is an abundant number, since it is smaller than the sum of its proper divisors (20770016).

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

11165440 is a wasteful number, since it uses less digits than its factorization.

11165440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 11165440 is about 3341.4727292019. The cubic root of 11165440 is about 223.5074210076.

It can be divided in two parts, 1116 and 5440, that added together give a palindrome (6556).

The spelling of 11165440 in words is "eleven million, one hundred sixty-five thousand, four hundred forty".