12380660 has 12 divisors (see below), whose sum is σ = 25999428. Its totient is φ = 4952256.

The previous prime is 12380653. The next prime is 12380663. The reversal of 12380660 is 6608321.

It can be written as a sum of positive squares in 2 ways, for example, as 7118224 + 5262436 = 2668^2 + 2294^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309497 + ... + 309536.

It is an arithmetic number, because the mean of its divisors is an integer number (2166619).

Almost surely, 2^12380660 is an apocalyptic number.

12380660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12380660 is an abundant number, since it is smaller than the sum of its proper divisors (13618768).

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

12380660 is a wasteful number, since it uses less digits than its factorization.

12380660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619042 (or 619040 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 12380660 is about 3518.6162052716. The cubic root of 12380660 is about 231.3385090949.

Adding to 12380660 its reverse (6608321), we get a palindrome (18988981).

The spelling of 12380660 in words is "twelve million, three hundred eighty thousand, six hundred sixty".