168445420 has 48 divisors (see below), whose sum is σ = 415584288. Its totient is φ = 56540160.

The previous prime is 168445411. The next prime is 168445463. The reversal of 168445420 is 24544861.

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, 26589 + ... + 32308.

It is an arithmetic number, because the mean of its divisors is an integer number (8658006).

Almost surely, 2^168445420 is an apocalyptic number.

168445420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168445420 is an abundant number, since it is smaller than the sum of its proper divisors (247138868).

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

168445420 is a wasteful number, since it uses less digits than its factorization.

168445420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58930 (or 58928 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 168445420 is about 12978.6524724256. The cubic root of 168445420 is about 552.2720557351.

The spelling of 168445420 in words is "one hundred sixty-eight million, four hundred forty-five thousand, four hundred twenty".