168713928 has 64 divisors (see below), whose sum is σ = 474484800. Its totient is φ = 56232144.

The previous prime is 168713903. The next prime is 168713953. The reversal of 168713928 is 829317861.

It is an interprime number because it is at equal distance from previous prime (168713903) and next prime (168713953).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12675 + ... + 22317.

It is an arithmetic number, because the mean of its divisors is an integer number (7413825).

Almost surely, 2^168713928 is an apocalyptic number.

168713928 is a gapful number since it is divisible by the number (18) 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 168713928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237242400).

168713928 is an abundant number, since it is smaller than the sum of its proper divisors (305770872).

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

168713928 is an frugal number, since it uses more digits than its factorization.

168713928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670 (or 9648 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 168713928 is about 12988.9925706346. The cubic root of 168713928 is about 552.5653470615.

The spelling of 168713928 in words is "one hundred sixty-eight million, seven hundred thirteen thousand, nine hundred twenty-eight".