12280239 has 12 divisors (see below), whose sum is σ = 18781776. Its totient is φ = 7705152.

The previous prime is 12280223. The next prime is 12280249. The reversal of 12280239 is 93208221.

It is a happy number.

It is not a de Polignac number, because 12280239 - 2⁴ = 12280223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39979 + ... + 40284.

It is an arithmetic number, because the mean of its divisors is an integer number (1565148).

Almost surely, 2^12280239 is an apocalyptic number.

12280239 is a deficient number, since it is larger than the sum of its proper divisors (6501537).

12280239 is a wasteful number, since it uses less digits than its factorization.

12280239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80286 (or 80283 counting only the distinct ones).

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

The square root of 12280239 is about 3504.3171945473. The cubic root of 12280239 is about 230.7113389911.

The spelling of 12280239 in words is "twelve million, two hundred eighty thousand, two hundred thirty-nine".