20850086 has 8 divisors (see below), whose sum is σ = 31434480. Its totient is φ = 10371928.

The previous prime is 20850083. The next prime is 20850097. The reversal of 20850086 is 68005802.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850083) by changing a digit.

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, 26066 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (3929310).

Almost surely, 2^20850086 is an apocalyptic number.

20850086 is a deficient number, since it is larger than the sum of its proper divisors (10584394).

20850086 is a wasteful number, since it uses less digits than its factorization.

20850086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53118.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 20850086 is about 4566.1894397846. The cubic root of 20850086 is about 275.2343390960.

Adding to 20850086 its reverse (68005802), we get a palindrome (88855888).

The spelling of 20850086 in words is "twenty million, eight hundred fifty thousand, eighty-six".