12241818 has 24 divisors (see below), whose sum is σ = 26590356. Its totient is φ = 4070400.

The previous prime is 12241787. The next prime is 12241837. The reversal of 12241818 is 81814221.

It can be written as a sum of positive squares in 2 ways, for example, as 11068929 + 1172889 = 3327^2 + 1083^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

12241818 is a modest number, since divided by 1818 gives 1224 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12241791 and 12241800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11008 + ... + 12068.

Almost surely, 2^12241818 is an apocalyptic number.

12241818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12241818 is an abundant number, since it is smaller than the sum of its proper divisors (14348538).

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

12241818 is a wasteful number, since it uses less digits than its factorization.

12241818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710 (or 1707 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 12241818 is about 3498.8309476166. The cubic root of 12241818 is about 230.4704799208.

The spelling of 12241818 in words is "twelve million, two hundred forty-one thousand, eight hundred eighteen".