11043840 has 88 divisors (see below), whose sum is σ = 35372160. Its totient is φ = 2940928.

The previous prime is 11043833. The next prime is 11043853. The reversal of 11043840 is 4834011.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15001 + ... + 15719.

Almost surely, 2^11043840 is an apocalyptic number.

11043840 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 11043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17686080).

11043840 is an abundant number, since it is smaller than the sum of its proper divisors (24328320).

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

11043840 is an equidigital number, since it uses as much as digits as its factorization.

11043840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 11043840 is about 3323.2273470228. The cubic root of 11043840 is about 222.6930698050.

Adding to 11043840 its reverse (4834011), we get a palindrome (15877851).

The spelling of 11043840 in words is "eleven million, forty-three thousand, eight hundred forty".