11520404 has 12 divisors (see below), whose sum is σ = 23040864. Its totient is φ = 4937304.

The previous prime is 11520391. The next prime is 11520409. The reversal of 11520404 is 40402511.

11520404 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520409) by changing a digit.

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, 205694 + ... + 205749.

It is an arithmetic number, because the mean of its divisors is an integer number (1920072).

Almost surely, 2^11520404 is an apocalyptic number.

11520404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11520404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11520404 is a wasteful number, since it uses less digits than its factorization.

11520404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411454 (or 411452 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 11520404 is about 3394.1720639944. The cubic root of 11520404 is about 225.8512870294.

Adding to 11520404 its reverse (40402511), we get a palindrome (51922915).

The spelling of 11520404 in words is "eleven million, five hundred twenty thousand, four hundred four".