13126780 has 24 divisors (see below), whose sum is σ = 27649440. Its totient is φ = 5234880.

The previous prime is 13126769. The next prime is 13126793. The reversal of 13126780 is 8762131.

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 7 ways as a sum of consecutive naturals, for example, 7641 + ... + 9199.

It is an arithmetic number, because the mean of its divisors is an integer number (1152060).

Almost surely, 2^13126780 is an apocalyptic number.

13126780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13126780 is an abundant number, since it is smaller than the sum of its proper divisors (14522660).

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

13126780 is a wasteful number, since it uses less digits than its factorization.

13126780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13126780 is about 3623.0898415579. The cubic root of 13126780 is about 235.8953620199.

The spelling of 13126780 in words is "thirteen million, one hundred twenty-six thousand, seven hundred eighty".