268128716 has 6 divisors (see below), whose sum is σ = 469225260. Its totient is φ = 134064356.

The previous prime is 268128713. The next prime is 268128739. The reversal of 268128716 is 617821862.

It is not an unprimeable number, because it can be changed into a prime (268128713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33516086 + ... + 33516093.

It is an arithmetic number, because the mean of its divisors is an integer number (78204210).

Almost surely, 2^268128716 is an apocalyptic number.

It is an amenable number.

268128716 is a deficient number, since it is larger than the sum of its proper divisors (201096544).

268128716 is a wasteful number, since it uses less digits than its factorization.

268128716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67032183 (or 67032181 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 268128716 is about 16374.6363623746. The cubic root of 268128716 is about 644.8337740428.

The spelling of 268128716 in words is "two hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred sixteen".