12239136 has 144 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 3220992.

The previous prime is 12239093. The next prime is 12239147. The reversal of 12239136 is 63193221.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 25975 + ... + 26441.

It is an arithmetic number, because the mean of its divisors is an integer number (298116).

Almost surely, 2^12239136 is an apocalyptic number.

12239136 is a gapful number since it is divisible by the number (16) 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 12239136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21464352).

12239136 is an abundant number, since it is smaller than the sum of its proper divisors (30689568).

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

12239136 is a wasteful number, since it uses less digits than its factorization.

12239136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 492 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 12239136 is about 3498.4476557468. The cubic root of 12239136 is about 230.4536478083.

The spelling of 12239136 in words is "twelve million, two hundred thirty-nine thousand, one hundred thirty-six".