728168 has 16 divisors (see below), whose sum is σ = 1560480. Its totient is φ = 312048.

The previous prime is 728131. The next prime is 728173. The reversal of 728168 is 861827.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6446 + ... + 6557.

It is an arithmetic number, because the mean of its divisors is an integer number (97530).

2⁷²⁸¹⁶⁸ is an apocalyptic number.

It is an amenable number.

728168 is an abundant number, since it is smaller than the sum of its proper divisors (832312).

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

728168 is a wasteful number, since it uses less digits than its factorization.

728168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13016 (or 13012 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 728168 is about 853.3276041474. The cubic root of 728168 is about 89.9657482832.

The spelling of 728168 in words is "seven hundred twenty-eight thousand, one hundred sixty-eight".