12004220 has 24 divisors (see below), whose sum is σ = 25376064. Its totient is φ = 4769856.

The previous prime is 12004217. The next prime is 12004271. The reversal of 12004220 is 2240021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229 + ... + 5051.

It is an arithmetic number, because the mean of its divisors is an integer number (1057336).

Almost surely, 2^12004220 is an apocalyptic number.

12004220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12004220 is an abundant number, since it is smaller than the sum of its proper divisors (13371844).

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

12004220 is a wasteful number, since it uses less digits than its factorization.

12004220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989 (or 3987 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 12004220 is about 3464.7106661307. The cubic root of 12004220 is about 228.9696825548.

Adding to 12004220 its reverse (2240021), we get a palindrome (14244241).

The spelling of 12004220 in words is "twelve million, four thousand, two hundred twenty".