13570986 has 32 divisors (see below), whose sum is σ = 31889088. Its totient is φ = 3795840.

The previous prime is 13570939. The next prime is 13571009. The reversal of 13570986 is 68907531.

It is a super-2 number, since 2×13570986² = 368343322024392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7051 + ... + 8766.

It is an arithmetic number, because the mean of its divisors is an integer number (996534).

Almost surely, 2^13570986 is an apocalyptic number.

13570986 is an abundant number, since it is smaller than the sum of its proper divisors (18318102).

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

13570986 is a wasteful number, since it uses less digits than its factorization.

13570986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846.

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

The square root of 13570986 is about 3683.8819199317. The cubic root of 13570986 is about 238.5267738008.

The spelling of 13570986 in words is "thirteen million, five hundred seventy thousand, nine hundred eighty-six".