12328780 has 12 divisors (see below), whose sum is σ = 25890480. Its totient is φ = 4931504.

The previous prime is 12328747. The next prime is 12328781. The reversal of 12328780 is 8782321.

It is not an unprimeable number, because it can be changed into a prime (12328781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308200 + ... + 308239.

It is an arithmetic number, because the mean of its divisors is an integer number (2157540).

Almost surely, 2^12328780 is an apocalyptic number.

12328780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12328780 is an abundant number, since it is smaller than the sum of its proper divisors (13561700).

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

12328780 is a wasteful number, since it uses less digits than its factorization.

12328780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616448 (or 616446 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12328780 is about 3511.2362495281. The cubic root of 12328780 is about 231.0149225444.

The spelling of 12328780 in words is "twelve million, three hundred twenty-eight thousand, seven hundred eighty".