12239780 has 24 divisors (see below), whose sum is σ = 29375808. Its totient is φ = 4196448.

The previous prime is 12239753. The next prime is 12239791. The reversal of 12239780 is 8793221.

12239780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43574 + ... + 43853.

It is an arithmetic number, because the mean of its divisors is an integer number (1223992).

Almost surely, 2^12239780 is an apocalyptic number.

12239780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12239780 is an abundant number, since it is smaller than the sum of its proper divisors (17136028).

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

12239780 is a wasteful number, since it uses less digits than its factorization.

12239780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87443 (or 87441 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12239780 is about 3498.5396953586. The cubic root of 12239780 is about 230.4576897479.

The spelling of 12239780 in words is "twelve million, two hundred thirty-nine thousand, seven hundred eighty".