20150166 has 16 divisors (see below), whose sum is σ = 40446144. Its totient is φ = 6692424.

The previous prime is 20150161. The next prime is 20150177. The reversal of 20150166 is 66105102.

It is a happy number.

20150166 is nontrivially palindromic in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4236 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (2527884).

Almost surely, 2^20150166 is an apocalyptic number.

20150166 is an abundant number, since it is smaller than the sum of its proper divisors (20295978).

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

20150166 is a wasteful number, since it uses less digits than its factorization.

20150166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20150166 is about 4488.8936276103. The cubic root of 20150166 is about 272.1194238415.

Adding to 20150166 its reverse (66105102), we get a palindrome (86255268).

The spelling of 20150166 in words is "twenty million, one hundred fifty thousand, one hundred sixty-six".