268891386 has 16 divisors (see below), whose sum is σ = 541889568. Its totient is φ = 88946000.

The previous prime is 268891361. The next prime is 268891411. The reversal of 268891386 is 683198862.

It is an interprime number because it is at equal distance from previous prime (268891361) and next prime (268891411).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170265 + ... + 171836.

It is an arithmetic number, because the mean of its divisors is an integer number (33868098).

Almost surely, 2^268891386 is an apocalyptic number.

268891386 is an abundant number, since it is smaller than the sum of its proper divisors (272998182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268891386 is a wasteful number, since it uses less digits than its factorization.

268891386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342237.

The product of its digits is 995328, while the sum is 51.

The square root of 268891386 is about 16397.9079763243. The cubic root of 268891386 is about 645.4445874198. Note that the first 3 decimals are identical.

The spelling of 268891386 in words is "two hundred sixty-eight million, eight hundred ninety-one thousand, three hundred eighty-six".