12223240 has 16 divisors (see below), whose sum is σ = 27502380. Its totient is φ = 4889280.

The previous prime is 12223199. The next prime is 12223271. The reversal of 12223240 is 4232221.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 649636 = 3402^2 + 806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152751 + ... + 152830.

Almost surely, 2^12223240 is an apocalyptic number.

12223240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223240 is an abundant number, since it is smaller than the sum of its proper divisors (15279140).

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

12223240 is a wasteful number, since it uses less digits than its factorization.

12223240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305592 (or 305588 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12223240 is about 3496.1750528256. The cubic root of 12223240 is about 230.3538347094.

Adding to 12223240 its reverse (4232221), we get a palindrome (16455461).

The spelling of 12223240 in words is "twelve million, two hundred twenty-three thousand, two hundred forty".