12538224 has 30 divisors (see below), whose sum is σ = 35090016. Its totient is φ = 4179360.

The previous prime is 12538223. The next prime is 12538249. The reversal of 12538224 is 42283521.

It is a super-2 number, since 2×12538224² = 314414122148352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43392 + ... + 43679.

Almost surely, 2^12538224 is an apocalyptic number.

It is an amenable number.

12538224 is an abundant number, since it is smaller than the sum of its proper divisors (22551792).

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

12538224 is a wasteful number, since it uses less digits than its factorization.

12538224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87085 (or 87076 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 12538224 is about 3540.9354696182. The cubic root of 12538224 is about 232.3157610842.

The spelling of 12538224 in words is "twelve million, five hundred thirty-eight thousand, two hundred twenty-four".