It is a happy number.
20166102 is a `hidden beast` number, since 2 + 0 + 1 + 661 + 0 + 2 = 666.
20166102 is nontrivially palindromic in base 10.
It is a congruent number.
It is an unprimeable number.
Almost surely, 220166102 is an apocalyptic number.
20166102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 20166102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24648624).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20166102 is a wasteful number, since it uses less digits than its factorization.
20166102 is an odious number, because the sum of its binary digits is odd.
The square root of 20166102 is about 4490.6683244257. The cubic root of 20166102 is about 272.1911412399.
The spelling of 20166102 in words is "twenty million, one hundred sixty-six thousand, one hundred two".