11385520 has 20 divisors (see below), whose sum is σ = 26471520. Its totient is φ = 4554176.

The previous prime is 11385509. The next prime is 11385527. The reversal of 11385520 is 2558311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (11385527) 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, 71080 + ... + 71239.

It is an arithmetic number, because the mean of its divisors is an integer number (1323576).

Almost surely, 2^11385520 is an apocalyptic number.

11385520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11385520 is an abundant number, since it is smaller than the sum of its proper divisors (15086000).

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

11385520 is a wasteful number, since it uses less digits than its factorization.

11385520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142332 (or 142326 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 11385520 is about 3374.2436189463. The cubic root of 11385520 is about 224.9663818085.

The spelling of 11385520 in words is "eleven million, three hundred eighty-five thousand, five hundred twenty".