11512040 has 16 divisors (see below), whose sum is σ = 25902180. Its totient is φ = 4604800.

The previous prime is 11512037. The next prime is 11512051. The reversal of 11512040 is 4021511.

It can be written as a sum of positive squares in 2 ways, for example, as 11383876 + 128164 = 3374^2 + 358^2 .

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, 143861 + ... + 143940.

Almost surely, 2^11512040 is an apocalyptic number.

11512040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512040 is an abundant number, since it is smaller than the sum of its proper divisors (14390140).

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

11512040 is a wasteful number, since it uses less digits than its factorization.

11512040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287812 (or 287808 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 11512040 is about 3392.9397283182. The cubic root of 11512040 is about 225.7966165653.

Adding to 11512040 its reverse (4021511), we get a palindrome (15533551).

The spelling of 11512040 in words is "eleven million, five hundred twelve thousand, forty".