166227210 has 96 divisors (see below), whose sum is σ = 455165568. Its totient is φ = 42007680.

The previous prime is 166227209. The next prime is 166227253. The reversal of 166227210 is 12722661.

166227210 is a `hidden beast` number, since 16 + 622 + 7 + 21 + 0 = 666.

166227210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 270864 + ... + 271476.

It is an arithmetic number, because the mean of its divisors is an integer number (4741308).

Almost surely, 2^166227210 is an apocalyptic number.

166227210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166227210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227582784).

166227210 is an abundant number, since it is smaller than the sum of its proper divisors (288938358).

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

166227210 is a wasteful number, since it uses less digits than its factorization.

166227210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 166227210 is about 12892.9131696448. The cubic root of 166227210 is about 549.8370977609.

Adding to 166227210 its reverse (12722661), we get a palindrome (178949871).

It can be divided in two parts, 16622 and 7210, that added together give a palindrome (23832).

The spelling of 166227210 in words is "one hundred sixty-six million, two hundred twenty-seven thousand, two hundred ten".