168380928 has 60 divisors (see below), whose sum is σ = 485972058. Its totient is φ = 56125440.

The previous prime is 168380917. The next prime is 168380929. The reversal of 168380928 is 829083861.

It can be written as a sum of positive squares in only one way, i.e., 102576384 + 65804544 = 10128^2 + 8112^2 .

It is not an unprimeable number, because it can be changed into a prime (168380929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13663 + ... + 22878.

Almost surely, 2^168380928 is an apocalyptic number.

168380928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168380928 is an abundant number, since it is smaller than the sum of its proper divisors (317591130).

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

168380928 is an equidigital number, since it uses as much as digits as its factorization.

168380928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36565 (or 36546 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 168380928 is about 12976.1676931211. The cubic root of 168380928 is about 552.2015647003.

The spelling of 168380928 in words is "one hundred sixty-eight million, three hundred eighty thousand, nine hundred twenty-eight".