168522920 has 16 divisors (see below), whose sum is σ = 379176660. Its totient is φ = 67409152.

The previous prime is 168522917. The next prime is 168522943. The reversal of 168522920 is 29225861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 157803844 + 10719076 = 12562^2 + 3274^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106497 + ... + 2106576.

Almost surely, 2^168522920 is an apocalyptic number.

168522920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168522920 is an abundant number, since it is smaller than the sum of its proper divisors (210653740).

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

168522920 is a wasteful number, since it uses less digits than its factorization.

168522920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213084 (or 4213080 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 168522920 is about 12981.6378011405. The cubic root of 168522920 is about 552.3567409740.

The spelling of 168522920 in words is "one hundred sixty-eight million, five hundred twenty-two thousand, nine hundred twenty".