168368280 has 128 divisors (see below), whose sum is σ = 537477120. Its totient is φ = 42099200.

The previous prime is 168368279. The next prime is 168368281. The reversal of 168368280 is 82863861.

It is an interprime number because it is at equal distance from previous prime (168368279) and next prime (168368281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168368281) 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, 145705 + ... + 146855.

It is an arithmetic number, because the mean of its divisors is an integer number (4199040).

Almost surely, 2^168368280 is an apocalyptic number.

168368280 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 168368280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268738560).

168368280 is an abundant number, since it is smaller than the sum of its proper divisors (369108840).

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

168368280 is a wasteful number, since it uses less digits than its factorization.

168368280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 168368280 is about 12975.6803289847. The cubic root of 168368280 is about 552.1877380744.

The spelling of 168368280 in words is "one hundred sixty-eight million, three hundred sixty-eight thousand, two hundred eighty".