13078305 has 24 divisors (see below), whose sum is σ = 22820928. Its totient is φ = 6928416.

The previous prime is 13078243. The next prime is 13078309. The reversal of 13078305 is 50387031.

13078305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13078305 - 2¹⁴ = 13061921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13078309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6444 + ... + 8226.

It is an arithmetic number, because the mean of its divisors is an integer number (950872).

Almost surely, 2^13078305 is an apocalyptic number.

13078305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13078305 is a deficient number, since it is larger than the sum of its proper divisors (9742623).

13078305 is a wasteful number, since it uses less digits than its factorization.

13078305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 13078305 is about 3616.3939221274. The cubic root of 13078305 is about 235.6046298296.

The spelling of 13078305 in words is "thirteen million, seventy-eight thousand, three hundred five".