166870020 has 48 divisors (see below), whose sum is σ = 468095040. Its totient is φ = 44416896.

The previous prime is 166870013. The next prime is 166870139. The reversal of 166870020 is 20078661.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 166870020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34894 + ... + 39386.

It is an arithmetic number, because the mean of its divisors is an integer number (9751980).

Almost surely, 2^166870020 is an apocalyptic number.

166870020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166870020 is an abundant number, since it is smaller than the sum of its proper divisors (301225020).

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

166870020 is a wasteful number, since it uses less digits than its factorization.

166870020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124 (or 5122 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 166870020 is about 12917.8179271888. The cubic root of 166870020 is about 550.5449364861.

The spelling of 166870020 in words is "one hundred sixty-six million, eight hundred seventy thousand, twenty".