268431178 has 4 divisors (see below), whose sum is σ = 402646770. Its totient is φ = 134215588.

The previous prime is 268431169. The next prime is 268431181. The reversal of 268431178 is 871134862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 135559449 + 132871729 = 11643^2 + 11527^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 268431178.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67107793 + ... + 67107796.

Almost surely, 2^268431178 is an apocalyptic number.

268431178 is a deficient number, since it is larger than the sum of its proper divisors (134215592).

268431178 is a wasteful number, since it uses less digits than its factorization.

268431178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134215591.

The product of its digits is 64512, while the sum is 40.

The square root of 268431178 is about 16383.8694452806. The cubic root of 268431178 is about 645.0761506950.

The spelling of 268431178 in words is "two hundred sixty-eight million, four hundred thirty-one thousand, one hundred seventy-eight".