20083986 has 24 divisors (see below), whose sum is σ = 46863180. Its totient is φ = 6179616.

The previous prime is 20083981. The next prime is 20084011. The reversal of 20083986 is 68938002.

It can be written as a sum of positive squares in 2 ways, for example, as 15327225 + 4756761 = 3915^2 + 2181^2 .

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 20083986.

It is not an unprimeable number, because it can be changed into a prime (20083981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42681 + ... + 43148.

Almost surely, 2^20083986 is an apocalyptic number.

20083986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20083986 is an abundant number, since it is smaller than the sum of its proper divisors (26779194).

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

20083986 is a wasteful number, since it uses less digits than its factorization.

20083986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85850 (or 85847 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20083986 is about 4481.5160381282. The cubic root of 20083986 is about 271.8211861782.

The spelling of 20083986 in words is "twenty million, eighty-three thousand, nine hundred eighty-six".