12808980 has 36 divisors (see below), whose sum is σ = 38854452. Its totient is φ = 3415680.

The previous prime is 12808979. The next prime is 12808997. The reversal of 12808980 is 8980821.

It can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 5934096 = 2622^2 + 2436^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35401 + ... + 35760.

Almost surely, 2^12808980 is an apocalyptic number.

12808980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12808980 is an abundant number, since it is smaller than the sum of its proper divisors (26045472).

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

12808980 is a wasteful number, since it uses less digits than its factorization.

12808980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71176 (or 71171 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 12808980 is about 3578.9635371152. The cubic root of 12808980 is about 233.9761097679.

The spelling of 12808980 in words is "twelve million, eight hundred eight thousand, nine hundred eighty".