168161280 has 416 divisors, whose sum is σ = 679394304. Its totient is φ = 34603008.

The previous prime is 168161239. The next prime is 168161281. The reversal of 168161280 is 82161861.

168161280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168161281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7311349 + ... + 7311371.

Almost surely, 2^168161280 is an apocalyptic number.

168161280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339697152).

168161280 is an abundant number, since it is smaller than the sum of its proper divisors (511233024).

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

168161280 is a wasteful number, since it uses less digits than its factorization.

168161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 168161280 is about 12967.7014154398. The cubic root of 168161280 is about 551.9613499509.

The spelling of 168161280 in words is "one hundred sixty-eight million, one hundred sixty-one thousand, two hundred eighty".