20006286 has 16 divisors (see below), whose sum is σ = 40099968. Its totient is φ = 6654200.

The previous prime is 20006279. The next prime is 20006339. The reversal of 20006286 is 68260002.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 450 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (2506248).

Almost surely, 2^20006286 is an apocalyptic number.

20006286 is an abundant number, since it is smaller than the sum of its proper divisors (20093682).

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

20006286 is a wasteful number, since it uses less digits than its factorization.

20006286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20006286 is about 4472.8386959514. The cubic root of 20006286 is about 271.4701967292.

Adding to 20006286 its reverse (68260002), we get a palindrome (88266288).

The spelling of 20006286 in words is "twenty million, six thousand, two hundred eighty-six".