11520243 has 36 divisors (see below), whose sum is σ = 19597968. Its totient is φ = 6501600.

The previous prime is 11520227. The next prime is 11520269. The reversal of 11520243 is 34202511.

It is not a de Polignac number, because 11520243 - 2⁴ = 11520227 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520293) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66505 + ... + 66677.

It is an arithmetic number, because the mean of its divisors is an integer number (544388).

Almost surely, 2^11520243 is an apocalyptic number.

11520243 is a deficient number, since it is larger than the sum of its proper divisors (8077725).

11520243 is a wasteful number, since it uses less digits than its factorization.

11520243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 334 counting only the distinct ones).

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

The square root of 11520243 is about 3394.1483467875. The cubic root of 11520243 is about 225.8502349186.

Adding to 11520243 its reverse (34202511), we get a palindrome (45722754).

The spelling of 11520243 in words is "eleven million, five hundred twenty thousand, two hundred forty-three".