11243520 has 156 divisors (see below), whose sum is σ = 39611676. Its totient is φ = 2949120.

The previous prime is 11243509. The next prime is 11243563. The reversal of 11243520 is 2534211.

It can be written as a sum of positive squares in 2 ways, for example, as 1806336 + 9437184 = 1344^2 + 3072^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11243493 and 11243502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184290 + ... + 184350.

It is an arithmetic number, because the mean of its divisors is an integer number (253921).

Almost surely, 2^11243520 is an apocalyptic number.

11243520 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 11243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19805838).

11243520 is an abundant number, since it is smaller than the sum of its proper divisors (28368156).

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

11243520 is an equidigital number, since it uses as much as digits as its factorization.

11243520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 11243520 is about 3353.1358457420. The cubic root of 11243520 is about 224.0272075795.

Adding to 11243520 its reverse (2534211), we get a palindrome (13777731).

The spelling of 11243520 in words is "eleven million, two hundred forty-three thousand, five hundred twenty".