268128712 has 8 divisors (see below), whose sum is σ = 502741350. Its totient is φ = 134064352.

The previous prime is 268128691. The next prime is 268128713. The reversal of 268128712 is 217821862.

It can be written as a sum of positive squares in only one way, i.e., 215913636 + 52215076 = 14694^2 + 7226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16758037 + ... + 16758052.

Almost surely, 2^268128712 is an apocalyptic number.

It is an amenable number.

268128712 is a deficient number, since it is larger than the sum of its proper divisors (234612638).

268128712 is a wasteful number, since it uses less digits than its factorization.

268128712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33516095 (or 33516091 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 268128712 is about 16374.6362402345. The cubic root of 268128712 is about 644.8337708362.

The spelling of 268128712 in words is "two hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred twelve".