168920520 has 32 divisors (see below), whose sum is σ = 506761920. Its totient is φ = 45045440.

The previous prime is 168920513. The next prime is 168920597. The reversal of 168920520 is 25029861.

168920520 is digitally balanced in base 3, 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, 703716 + ... + 703955.

It is an arithmetic number, because the mean of its divisors is an integer number (15836310).

Almost surely, 2^168920520 is an apocalyptic number.

168920520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168920520 is an abundant number, since it is smaller than the sum of its proper divisors (337841400).

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

168920520 is a wasteful number, since it uses less digits than its factorization.

168920520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407685 (or 1407681 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 168920520 is about 12996.9427174240. The cubic root of 168920520 is about 552.7907957807.

The spelling of 168920520 in words is "one hundred sixty-eight million, nine hundred twenty thousand, five hundred twenty".