268138786 has 8 divisors (see below), whose sum is σ = 402356160. Its totient is φ = 134020068.

The previous prime is 268138781. The next prime is 268138799. The reversal of 268138786 is 687831862.

268138786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (268138781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17446 + ... + 28993.

It is an arithmetic number, because the mean of its divisors is an integer number (50294520).

Almost surely, 2^268138786 is an apocalyptic number.

268138786 is a deficient number, since it is larger than the sum of its proper divisors (134217374).

268138786 is a wasteful number, since it uses less digits than its factorization.

268138786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49328.

The product of its digits is 774144, while the sum is 49.

The square root of 268138786 is about 16374.9438472320. The cubic root of 268138786 is about 644.8418465274.

The spelling of 268138786 in words is "two hundred sixty-eight million, one hundred thirty-eight thousand, seven hundred eighty-six".