11109240 has 48 divisors (see below), whose sum is σ = 36106200. Its totient is φ = 2962368.

The previous prime is 11109227. The next prime is 11109289. The reversal of 11109240 is 4290111.

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

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 15070 + ... + 15789.

Almost surely, 2^11109240 is an apocalyptic number.

11109240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11109240 is an abundant number, since it is smaller than the sum of its proper divisors (24996960).

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

11109240 is a wasteful number, since it uses less digits than its factorization.

11109240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30876 (or 30869 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 11109240 is about 3333.0526548496. The cubic root of 11109240 is about 223.1317901566.

Adding to 11109240 its reverse (4290111), we get a palindrome (15399351).

The spelling of 11109240 in words is "eleven million, one hundred nine thousand, two hundred forty".