11243940 has 48 divisors (see below), whose sum is σ = 31964352. Its totient is φ = 2952576.

The previous prime is 11243933. The next prime is 11243957. The reversal of 11243940 is 4934211.

It is a self number, because there is not a number n which added to its sum of digits gives 11243940.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2622 + ... + 5418.

It is an arithmetic number, because the mean of its divisors is an integer number (665924).

Almost surely, 2^11243940 is an apocalyptic number.

11243940 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 11243940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15982176).

11243940 is an abundant number, since it is smaller than the sum of its proper divisors (20720412).

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

11243940 is a wasteful number, since it uses less digits than its factorization.

11243940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 11243940 is about 3353.1984731000. The cubic root of 11243940 is about 224.0299970457.

It can be divided in two parts, 11 and 243940, that added together give a triangular number (243951 = T₆₉₈).

The spelling of 11243940 in words is "eleven million, two hundred forty-three thousand, nine hundred forty".