20086686 has 24 divisors (see below), whose sum is σ = 45812520. Its totient is φ = 6343056.

The previous prime is 20086657. The next prime is 20086699. The reversal of 20086686 is 68668002.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20086686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29025 + ... + 29708.

It is an arithmetic number, because the mean of its divisors is an integer number (1908855).

Almost surely, 2^20086686 is an apocalyptic number.

20086686 is an abundant number, since it is smaller than the sum of its proper divisors (25725834).

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

20086686 is a wasteful number, since it uses less digits than its factorization.

20086686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58760 (or 58757 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 20086686 is about 4481.8172653512. The cubic root of 20086686 is about 271.8333664349.

The spelling of 20086686 in words is "twenty million, eighty-six thousand, six hundred eighty-six".