268991371 has 16 divisors (see below), whose sum is σ = 316090368. Its totient is φ = 226353600.

The previous prime is 268991353. The next prime is 268991383. The reversal of 268991371 is 173199862.

It is a happy number.

It is not a de Polignac number, because 268991371 - 2⁷ = 268991243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268991311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9306 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (19755648).

Almost surely, 2^268991371 is an apocalyptic number.

268991371 is a deficient number, since it is larger than the sum of its proper divisors (47098997).

268991371 is a wasteful number, since it uses less digits than its factorization.

268991371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34362.

The product of its digits is 163296, while the sum is 46.

The square root of 268991371 is about 16400.9564050393. The cubic root of 268991371 is about 645.5245785527.

The spelling of 268991371 in words is "two hundred sixty-eight million, nine hundred ninety-one thousand, three hundred seventy-one".