13278680 has 16 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 5311456.

The previous prime is 13278677. The next prime is 13278709. The reversal of 13278680 is 8687231.

It is a self number, because there is not a number n which added to its sum of digits gives 13278680.

It is a congruent number.

It is an unprimeable number.

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, 165944 + ... + 166023.

It is an arithmetic number, because the mean of its divisors is an integer number (1867320).

Almost surely, 2^13278680 is an apocalyptic number.

13278680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13278680 is an abundant number, since it is smaller than the sum of its proper divisors (16598440).

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

13278680 is a wasteful number, since it uses less digits than its factorization.

13278680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331978 (or 331974 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 13278680 is about 3643.9923161280. The cubic root of 13278680 is about 236.8017831464.

The spelling of 13278680 in words is "thirteen million, two hundred seventy-eight thousand, six hundred eighty".