408128068 has 6 divisors (see below), whose sum is σ = 714224126. Its totient is φ = 204064032.

The previous prime is 408128059. The next prime is 408128087. The reversal of 408128068 is 860821804.

It can be written as a sum of positive squares in only one way, i.e., 205578244 + 202549824 = 14338^2 + 14232^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51016005 + ... + 51016012.

Almost surely, 2^408128068 is an apocalyptic number.

It is an amenable number.

408128068 is a deficient number, since it is larger than the sum of its proper divisors (306096058).

408128068 is a wasteful number, since it uses less digits than its factorization.

408128068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102032021 (or 102032019 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 408128068 is about 20202.1797833798. The cubic root of 408128068 is about 741.7635488696.

The spelling of 408128068 in words is "four hundred eight million, one hundred twenty-eight thousand, sixty-eight".