12004320 has 96 divisors (see below), whose sum is σ = 38374560. Its totient is φ = 3153920.

The previous prime is 12004319. The next prime is 12004331. The reversal of 12004320 is 2340021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12004296 and 12004305.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 42580 + ... + 42860.

It is an arithmetic number, because the mean of its divisors is an integer number (399735).

Almost surely, 2^12004320 is an apocalyptic number.

12004320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12004320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19187280).

12004320 is an abundant number, since it is smaller than the sum of its proper divisors (26370240).

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

12004320 is a wasteful number, since it uses less digits than its factorization.

12004320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12004320 is about 3464.7250973201. The cubic root of 12004320 is about 228.9703183564.

Adding to 12004320 its reverse (2340021), we get a palindrome (14344341).

The spelling of 12004320 in words is "twelve million, four thousand, three hundred twenty".