20201286 has 32 divisors (see below), whose sum is σ = 46425600. Its totient is φ = 5740416.

The previous prime is 20201273. The next prime is 20201303. The reversal of 20201286 is 68210202.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 7150 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (1450800).

Almost surely, 2^20201286 is an apocalyptic number.

20201286 is an abundant number, since it is smaller than the sum of its proper divisors (26224314).

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

20201286 is a wasteful number, since it uses less digits than its factorization.

20201286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

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

The square root of 20201286 is about 4494.5840741942. The cubic root of 20201286 is about 272.3493474704.

Adding to 20201286 its reverse (68210202), we get a palindrome (88411488).

The spelling of 20201286 in words is "twenty million, two hundred one thousand, two hundred eighty-six".