12280660 has 24 divisors (see below), whose sum is σ = 29473920. Its totient is φ = 4210464.

The previous prime is 12280621. The next prime is 12280661. The reversal of 12280660 is 6608221.

It is a super-2 number, since 2×12280660² = 301629220071200, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280661) 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 7 ways as a sum of consecutive naturals, for example, 43720 + ... + 43999.

It is an arithmetic number, because the mean of its divisors is an integer number (1228080).

Almost surely, 2^12280660 is an apocalyptic number.

12280660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12280660 is an abundant number, since it is smaller than the sum of its proper divisors (17193260).

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

12280660 is a wasteful number, since it uses less digits than its factorization.

12280660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87735 (or 87733 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12280660 is about 3504.3772627958. The cubic root of 12280660 is about 230.7139754317.

Adding to 12280660 its reverse (6608221), we get a palindrome (18888881).

The spelling of 12280660 in words is "twelve million, two hundred eighty thousand, six hundred sixty".