168166020 has 96 divisors (see below), whose sum is σ = 522216576. Its totient is φ = 40089600.

The previous prime is 168166013. The next prime is 168166039. The reversal of 168166020 is 20661861.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38172 + ... + 42348.

It is an arithmetic number, because the mean of its divisors is an integer number (5439756).

Almost surely, 2^168166020 is an apocalyptic number.

168166020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168166020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261108288).

168166020 is an abundant number, since it is smaller than the sum of its proper divisors (354050556).

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

168166020 is a wasteful number, since it uses less digits than its factorization.

168166020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261 (or 4259 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 168166020 is about 12967.8841759171. The cubic root of 168166020 is about 551.9665359886.

The spelling of 168166020 in words is "one hundred sixty-eight million, one hundred sixty-six thousand, twenty".