20102286 has 8 divisors (see below), whose sum is σ = 40204584. Its totient is φ = 6700760.

The previous prime is 20102273. The next prime is 20102293. The reversal of 20102286 is 68220102.

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

20102286 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1675185 + ... + 1675196.

It is an arithmetic number, because the mean of its divisors is an integer number (5025573).

Almost surely, 2^20102286 is an apocalyptic number.

20102286 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.

20102286 is a wasteful number, since it uses less digits than its factorization.

20102286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350386.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20102286 is about 4483.5572930431. The cubic root of 20102286 is about 271.9037198885.

Adding to 20102286 its reverse (68220102), we get a palindrome (88322388).

The spelling of 20102286 in words is "twenty million, one hundred two thousand, two hundred eighty-six".