13086578 has 16 divisors (see below), whose sum is σ = 20067264. Its totient is φ = 6399120.

The previous prime is 13086571. The next prime is 13086589. The reversal of 13086578 is 87568031.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13086571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22001 + ... + 22587.

It is an arithmetic number, because the mean of its divisors is an integer number (1254204).

Almost surely, 2^13086578 is an apocalyptic number.

13086578 is a deficient number, since it is larger than the sum of its proper divisors (6980686).

13086578 is a wasteful number, since it uses less digits than its factorization.

13086578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 13086578 is about 3617.5375602749. The cubic root of 13086578 is about 235.6542985048.

It can be divided in two parts, 130 and 86578, that multiplied together give a triangular number (11255140 = T₄₇₄₄).

The spelling of 13086578 in words is "thirteen million, eighty-six thousand, five hundred seventy-eight".