268318478 has 4 divisors (see below), whose sum is σ = 402477720. Its totient is φ = 134159238.

The previous prime is 268318459. The next prime is 268318507. The reversal of 268318478 is 874813862.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67079618 + ... + 67079621.

It is an arithmetic number, because the mean of its divisors is an integer number (100619430).

Almost surely, 2^268318478 is an apocalyptic number.

268318478 is a deficient number, since it is larger than the sum of its proper divisors (134159242).

268318478 is a wasteful number, since it uses less digits than its factorization.

268318478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134159241.

The product of its digits is 516096, while the sum is 47.

The square root of 268318478 is about 16380.4297257429. The cubic root of 268318478 is about 644.9858603154.

The spelling of 268318478 in words is "two hundred sixty-eight million, three hundred eighteen thousand, four hundred seventy-eight".