12208224 has 96 divisors (see below), whose sum is σ = 37691136. Its totient is φ = 3386880.

The previous prime is 12208213. The next prime is 12208247. The reversal of 12208224 is 42280221.

It is a happy number.

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 (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12208224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24619 + ... + 25109.

It is an arithmetic number, because the mean of its divisors is an integer number (392616).

Almost surely, 2^12208224 is an apocalyptic number.

12208224 is a gapful number since it is divisible by the number (14) 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 12208224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18845568).

12208224 is an abundant number, since it is smaller than the sum of its proper divisors (25482912).

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

12208224 is a wasteful number, since it uses less digits than its factorization.

12208224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 12208224 is about 3494.0269031592. The cubic root of 12208224 is about 230.2594677335.

Adding to 12208224 its reverse (42280221), we get a palindrome (54488445).

The spelling of 12208224 in words is "twelve million, two hundred eight thousand, two hundred twenty-four".