11518040 has 32 divisors (see below), whose sum is σ = 26181360. Its totient is φ = 4560000.

The previous prime is 11518033. The next prime is 11518049. The reversal of 11518040 is 4081511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11518049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2615 + ... + 5465.

Almost surely, 2^11518040 is an apocalyptic number.

11518040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11518040 is an abundant number, since it is smaller than the sum of its proper divisors (14663320).

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

11518040 is a wasteful number, since it uses less digits than its factorization.

11518040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 11518040 is about 3393.8238021441. The cubic root of 11518040 is about 225.8358376590.

Adding to 11518040 its reverse (4081511), we get a palindrome (15599551).

Subtracting from 11518040 its reverse (4081511), we obtain a square (7436529 = 2727²).

The spelling of 11518040 in words is "eleven million, five hundred eighteen thousand, forty".