12980780 has 12 divisors (see below), whose sum is σ = 27259680. Its totient is φ = 5192304.

The previous prime is 12980753. The next prime is 12980783. The reversal of 12980780 is 8708921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12980780.

It is not an unprimeable number, because it can be changed into a prime (12980783) 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, 324500 + ... + 324539.

It is an arithmetic number, because the mean of its divisors is an integer number (2271640).

Almost surely, 2^12980780 is an apocalyptic number.

12980780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12980780 is an abundant number, since it is smaller than the sum of its proper divisors (14278900).

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

12980780 is a wasteful number, since it uses less digits than its factorization.

12980780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649048 (or 649046 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 12980780 is about 3602.8849551436. The cubic root of 12980780 is about 235.0175330211.

The spelling of 12980780 in words is "twelve million, nine hundred eighty thousand, seven hundred eighty".