168885220 has 24 divisors (see below), whose sum is σ = 405324864. Its totient is φ = 57903456.

The previous prime is 168885217. The next prime is 168885239. The reversal of 168885220 is 22588861.

It is a happy number.

168885220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603022 + ... + 603301.

It is an arithmetic number, because the mean of its divisors is an integer number (16888536).

Almost surely, 2^168885220 is an apocalyptic number.

168885220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168885220 is an abundant number, since it is smaller than the sum of its proper divisors (236439644).

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

168885220 is a wasteful number, since it uses less digits than its factorization.

168885220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206339 (or 1206337 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 168885220 is about 12995.5846347904. The cubic root of 168885220 is about 552.7522867933.

The spelling of 168885220 in words is "one hundred sixty-eight million, eight hundred eighty-five thousand, two hundred twenty".