11243240 has 16 divisors (see below), whose sum is σ = 25297380. Its totient is φ = 4497280.

The previous prime is 11243237. The next prime is 11243291. The reversal of 11243240 is 4234211.

It can be written as a sum of positive squares in 2 ways, for example, as 11195716 + 47524 = 3346^2 + 218^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140501 + ... + 140580.

Almost surely, 2^11243240 is an apocalyptic number.

11243240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11243240 is an abundant number, since it is smaller than the sum of its proper divisors (14054140).

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

11243240 is a wasteful number, since it uses less digits than its factorization.

11243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281092 (or 281088 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 11243240 is about 3353.0940935202. The cubic root of 11243240 is about 224.0253478968.

Adding to 11243240 its reverse (4234211), we get a palindrome (15477451).

The spelling of 11243240 in words is "eleven million, two hundred forty-three thousand, two hundred forty".