168768820 has 24 divisors (see below), whose sum is σ = 386634528. Its totient is φ = 61370400.

The previous prime is 168768791. The next prime is 168768827. The reversal of 168768820 is 28867861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168768827) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 383346 + ... + 383785.

It is an arithmetic number, because the mean of its divisors is an integer number (16109772).

Almost surely, 2^168768820 is an apocalyptic number.

168768820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168768820 is an abundant number, since it is smaller than the sum of its proper divisors (217865708).

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

168768820 is a wasteful number, since it uses less digits than its factorization.

168768820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767151 (or 767149 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 168768820 is about 12991.1054187086. The cubic root of 168768820 is about 552.6252672836.

It can be divided in two parts, 1687 and 68820, that added together give a palindrome (70507).

The spelling of 168768820 in words is "one hundred sixty-eight million, seven hundred sixty-eight thousand, eight hundred twenty".