12072224 has 12 divisors (see below), whose sum is σ = 23767254. Its totient is φ = 6036096.

The previous prime is 12072211. The next prime is 12072241. The reversal of 12072224 is 42227021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10679824 + 1392400 = 3268^2 + 1180^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12072196 and 12072205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188597 + ... + 188660.

Almost surely, 2^12072224 is an apocalyptic number.

It is an amenable number.

12072224 is a deficient number, since it is larger than the sum of its proper divisors (11695030).

12072224 is an equidigital number, since it uses as much as digits as its factorization.

12072224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377267 (or 377259 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 12072224 is about 3474.5106130216. The cubic root of 12072224 is about 229.4012403314.

Adding to 12072224 its reverse (42227021), we get a palindrome (54299245).

The spelling of 12072224 in words is "twelve million, seventy-two thousand, two hundred twenty-four".