20850166 has 32 divisors (see below), whose sum is σ = 33926400. Its totient is φ = 9590400.

The previous prime is 20850131. The next prime is 20850169. The reversal of 20850166 is 66105802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139860 + ... + 140008.

It is an arithmetic number, because the mean of its divisors is an integer number (1060200).

Almost surely, 2^20850166 is an apocalyptic number.

20850166 is a deficient number, since it is larger than the sum of its proper divisors (13076234).

20850166 is a wasteful number, since it uses less digits than its factorization.

20850166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 20850166 is about 4566.1981998157. The cubic root of 20850166 is about 275.2346911125.

Adding to 20850166 its reverse (66105802), we get a palindrome (86955968).

The spelling of 20850166 in words is "twenty million, eight hundred fifty thousand, one hundred sixty-six".