11145240 has 96 divisors (see below), whose sum is σ = 36756720. Its totient is φ = 2928384.

The previous prime is 11145223. The next prime is 11145247. The reversal of 11145240 is 4254111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11145247) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 29694 + ... + 30066.

Almost surely, 2^11145240 is an apocalyptic number.

11145240 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 11145240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18378360).

11145240 is an abundant number, since it is smaller than the sum of its proper divisors (25611480).

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

11145240 is a wasteful number, since it uses less digits than its factorization.

11145240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 11145240 is about 3338.4487415565. The cubic root of 11145240 is about 223.3725531973.

Adding to 11145240 its reverse (4254111), we get a palindrome (15399351).

The spelling of 11145240 in words is "eleven million, one hundred forty-five thousand, two hundred forty".