168032320 has 28 divisors (see below), whose sum is σ = 400127724. Its totient is φ = 67212800.

The previous prime is 168032297. The next prime is 168032327. The reversal of 168032320 is 23230861.

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 117679104 = 7096^2 + 10848^2 .

It is not an unprimeable number, because it can be changed into a prime (168032327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262231 + ... + 262870.

Almost surely, 2^168032320 is an apocalyptic number.

168032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168032320 is an abundant number, since it is smaller than the sum of its proper divisors (232095404).

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

168032320 is an equidigital number, since it uses as much as digits as its factorization.

168032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525118 (or 525108 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 168032320 is about 12962.7281079254. The cubic root of 168032320 is about 551.8202173048.

The spelling of 168032320 in words is "one hundred sixty-eight million, thirty-two thousand, three hundred twenty".