12065520 has 40 divisors (see below), whose sum is σ = 37403856. Its totient is φ = 3217408.

The previous prime is 12065519. The next prime is 12065549. The reversal of 12065520 is 2556021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 24897 + ... + 25376.

Almost surely, 2^12065520 is an apocalyptic number.

12065520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12065520 is an abundant number, since it is smaller than the sum of its proper divisors (25338336).

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

12065520 is a wasteful number, since it uses less digits than its factorization.

12065520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50289 (or 50283 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12065520 is about 3473.5457388668. The cubic root of 12065520 is about 229.3587684367.

The spelling of 12065520 in words is "twelve million, sixty-five thousand, five hundred twenty".