268810078 has 4 divisors (see below), whose sum is σ = 403215120. Its totient is φ = 134405038.

The previous prime is 268810067. The next prime is 268810079. The reversal of 268810078 is 870018862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870018862 = 2 ⋅435009431.

It is a self number, because there is not a number n which added to its sum of digits gives 268810078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268810079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67202518 + ... + 67202521.

It is an arithmetic number, because the mean of its divisors is an integer number (100803780).

Almost surely, 2^268810078 is an apocalyptic number.

268810078 is a deficient number, since it is larger than the sum of its proper divisors (134405042).

268810078 is a wasteful number, since it uses less digits than its factorization.

268810078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134405041.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 268810078 is about 16395.4285701838. The cubic root of 268810078 is about 645.3795238516.

The spelling of 268810078 in words is "two hundred sixty-eight million, eight hundred ten thousand, seventy-eight".