13085780 has 24 divisors (see below), whose sum is σ = 27814752. Its totient is φ = 5170592.

The previous prime is 13085741. The next prime is 13085791. The reversal of 13085780 is 8758031.

13085780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2282 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (1158948).

Almost surely, 2^13085780 is an apocalyptic number.

13085780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13085780 is an abundant number, since it is smaller than the sum of its proper divisors (14728972).

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

13085780 is a wasteful number, since it uses less digits than its factorization.

13085780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975 (or 7973 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 13085780 is about 3617.4272625721. The cubic root of 13085780 is about 235.6495084583.

The spelling of 13085780 in words is "thirteen million, eighty-five thousand, seven hundred eighty".