168428308 has 12 divisors (see below), whose sum is σ = 297358740. Its totient is φ = 83468672.

The previous prime is 168428297. The next prime is 168428311. The reversal of 168428308 is 803824861.

It can be written as a sum of positive squares in 2 ways, for example, as 89075844 + 79352464 = 9438^2 + 8908^2 .

It is a super-3 number, since 3×168428308³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

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, 185863 + ... + 186766.

It is an arithmetic number, because the mean of its divisors is an integer number (24779895).

Almost surely, 2^168428308 is an apocalyptic number.

It is an amenable number.

168428308 is a deficient number, since it is larger than the sum of its proper divisors (128930432).

168428308 is a wasteful number, since it uses less digits than its factorization.

168428308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372746 (or 372744 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 168428308 is about 12977.9932192924. The cubic root of 168428308 is about 552.2533537337.

It can be divided in two parts, 1684 and 28308, that added together give a palindrome (29992).

The spelling of 168428308 in words is "one hundred sixty-eight million, four hundred twenty-eight thousand, three hundred eight".