12239280 has 120 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 3210240.

The previous prime is 12239273. The next prime is 12239309. The reversal of 12239280 is 8293221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63985 + ... + 64175.

It is an arithmetic number, because the mean of its divisors is an integer number (348192).

Almost surely, 2^12239280 is an apocalyptic number.

12239280 is a gapful number since it is divisible by the number (10) 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 12239280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20891520).

12239280 is an abundant number, since it is smaller than the sum of its proper divisors (29543760).

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

12239280 is a wasteful number, since it uses less digits than its factorization.

12239280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 12239280 is about 3498.4682362428. The cubic root of 12239280 is about 230.4545516083.

The spelling of 12239280 in words is "twelve million, two hundred thirty-nine thousand, two hundred eighty".