168428338 has 8 divisors (see below), whose sum is σ = 272076588. Its totient is φ = 77736144.

The previous prime is 168428321. The next prime is 168428341. The reversal of 168428338 is 833824861.

168428338 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 164942649 + 3485689 = 12843^2 + 1867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×168428338³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168428294 and 168428303.

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, 3238981 + ... + 3239032.

Almost surely, 2^168428338 is an apocalyptic number.

168428338 is a deficient number, since it is larger than the sum of its proper divisors (103648250).

168428338 is a wasteful number, since it uses less digits than its factorization.

168428338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478028.

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

The square root of 168428338 is about 12977.9943750951. The cubic root of 168428338 is about 552.2533865223.

The spelling of 168428338 in words is "one hundred sixty-eight million, four hundred twenty-eight thousand, three hundred thirty-eight".