210166002 has 90 divisors (see below), whose sum is σ = 507836637. Its totient is φ = 64950336.

The previous prime is 210166001. The next prime is 210166013. The reversal of 210166002 is 200661012.

It is a happy number.

210166002 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 660 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 192349161 + 17816841 = 13869^2 + 4221^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10251.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (210166001) 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 44 ways as a sum of consecutive naturals, for example, 3136773 + ... + 3136839.

Almost surely, 2^210166002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210166002

210166002 is an abundant number, since it is smaller than the sum of its proper divisors (297670635).

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

210166002 is an equidigital number, since it uses as much as digits as its factorization.

210166002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 210166002 is about 14497.1032278866. The cubic root of 210166002 is about 594.5487735389.

Multiplying 210166002 by its sum of digits (18), we get a square (3782988036 = 61506²).

210166002 divided by its sum of digits (18) gives a square (11675889 = 3417²).

The spelling of 210166002 in words is "two hundred ten million, one hundred sixty-six thousand, two".