13057986 has 8 divisors (see below), whose sum is σ = 26115984. Its totient is φ = 4352660.

The previous prime is 13057973. The next prime is 13058009. The reversal of 13057986 is 68975031.

It is a sphenic number, since it is the product of 3 distinct primes.

13057986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088160 + ... + 1088171.

It is an arithmetic number, because the mean of its divisors is an integer number (3264498).

Almost surely, 2^13057986 is an apocalyptic number.

13057986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13057986 is a wasteful number, since it uses less digits than its factorization.

13057986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176336.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 13057986 is about 3613.5835399227. The cubic root of 13057986 is about 235.4825515266.

The spelling of 13057986 in words is "thirteen million, fifty-seven thousand, nine hundred eighty-six".