12004520 has 32 divisors (see below), whose sum is σ = 29466720. Its totient is φ = 4365120.

The previous prime is 12004519. The next prime is 12004529. The reversal of 12004520 is 2540021.

12004520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12004495 and 12004504.

It is not an unprimeable number, because it can be changed into a prime (12004529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13202 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (920835).

Almost surely, 2^12004520 is an apocalyptic number.

12004520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12004520 is an abundant number, since it is smaller than the sum of its proper divisors (17462200).

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

12004520 is a wasteful number, since it uses less digits than its factorization.

12004520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27305 (or 27301 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12004520 is about 3464.7539595186. The cubic root of 12004520 is about 228.9715899489.

Adding to 12004520 its reverse (2540021), we get a palindrome (14544541).

The spelling of 12004520 in words is "twelve million, four thousand, five hundred twenty".