12239424 has 84 divisors (see below), whose sum is σ = 36427664. Its totient is φ = 4074624.

The previous prime is 12239419. The next prime is 12239431. The reversal of 12239424 is 42493221.

12239424 is a `hidden beast` number, since 1 + 2 + 239 + 424 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 15159 + ... + 15945.

Almost surely, 2^12239424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12239424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18213832).

12239424 is an abundant number, since it is smaller than the sum of its proper divisors (24188240).

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

12239424 is an frugal number, since it uses more digits than its factorization.

12239424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 792 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 12239424 is about 3498.4888166178. The cubic root of 12239424 is about 230.4554554013.

The spelling of 12239424 in words is "twelve million, two hundred thirty-nine thousand, four hundred twenty-four".