168343828 has 6 divisors (see below), whose sum is σ = 294601706. Its totient is φ = 84171912.

The previous prime is 168343793. The next prime is 168343829. The reversal of 168343828 is 828343861.

It can be written as a sum of positive squares in only one way, i.e., 162103824 + 6240004 = 12732^2 + 2498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168343829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21042975 + ... + 21042982.

Almost surely, 2^168343828 is an apocalyptic number.

It is an amenable number.

168343828 is a deficient number, since it is larger than the sum of its proper divisors (126257878).

168343828 is a wasteful number, since it uses less digits than its factorization.

168343828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42085961 (or 42085959 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 168343828 is about 12974.7380705739. The cubic root of 168343828 is about 552.1610055089.

The spelling of 168343828 in words is "one hundred sixty-eight million, three hundred forty-three thousand, eight hundred twenty-eight".